12-20 July 2017
BEXCO
Asia/Seoul timezone
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Poster & Coffee

Place

Location: BEXCO
Address: BUSAN, KOREA
Date: from 13 Jul 15:00 to 19 Jul 16:30

Contribution List

Displaying 666 contributions out of 666
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Session: Poster & Coffee
Board #: 020
Session: Poster & Coffee
Board #: 078
Owing to the Pierre Auger observatory (PAO), we have an unprecedented amount of ultra-high-energy cosmic ray (UHECR) data. Using the data, we study the influence of the galactic magnetic field (GMF) on the trajectory of UHECRs with energy above 6x10^19 eV. The GMF is not uniform and its configuration is still uncertain. Besides, most studies on the GMF have been about the disk field. In this study ... More
Presented by Jihyun KIM on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 062
The analytical theory of diffusive acceleration of cosmic rays at parallel stationary shock waves of arbitrary speed with magnetostatic turbulence is developed from first principles. The theory is based on the diffusion approximation to the gyrotropic cosmic ray particle phase space distribution functions in the respective rest frames of the up- and downstream medium. We derive the correct cosmic ... More
Presented by Reinhard SCHLICKEISER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 061
According to structure formation simulations, weak shocks with typical Mach number, M< 3, are expected to form in merging galaxy clusters. The presence of such shocks have been indicated by X-ray and radio observations of many merging clusters. In particular, diffuse radio sources known as radio relics could be explained by synchrotron-emitting electrons accelerated via diffusive shock acceleratio ... More
Presented by Hyesung KANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 074
Identification and energy estimation of the primary particle of Extremely High Energy Cosmic Ray (EHECR) air showers may lead to understanding of the origin of Cosmic Rays having energy ≥ 〖10〗^20 eV. For such energies, photons are considered to be the most probable candidates. Preshowers formed by EHE photons in the earth’s magnetosphere have significant effect on the subsequent shower dev ... More
Presented by Gitanjali DEVI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 066
A precise measurement of proton and helium fluxes by AMS-02 experiment exhibit a remarkable hardening at energies above 100 GeV/nucleon. These data challenge the current theoretical models of CR acceleration in Galactic sources and propagation in the Galaxy. A transition between different CR diffusion regimes would be a relevant interpretation for the observed break of the spectra in light of rece ... More
Presented by Behrouz KHIALI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 044
The Cosmic Ray Energetics And Mass experiment for the International Space Station, ISS-CREAM, aims to study the origin, acceleration and propagation mechanism of high-energy cosmic rays. The ISS-CREAM payload is scheduled to be launched in 2017 to the ISS. The Top Counting Detector (TCD) and Bottom Counting Detector (BCD) are constructed for electron/gamma-ray physics. The TCD/BCD distinguish elec ... More
Presented by Hongjoo KIM on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 045
The Cosmic Ray Energetics And Mass (CREAM) instrument for the International Space Station (ISS) is a detector for studying the origin, acceleration and propagation mechanism of high-energy cosmic rays. The ISS-CREAM instrument is scheduled to launch in 2017 to the ISS. The Top and Bottom Counting Detectors (TCD/BCD) are designed for studying electron and gamma-ray physics. The TCD/BCD are composed ... More
Presented by Sinchul KANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 076
Local interstellar spectra (LIS) for protons, helium and antiprotons are built using the most recent experimental results combined with the state-of-the-art models for propagation in the Galaxy and heliosphere. Two propagation packages, GALPROP and HelMod, are combined to provide a single framework that is run to reproduce direct measurements of cosmic ray (CR) species at different modulation leve ... More
Presented by Igor MOSKALENKO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 012
The accurate measurement of the spectra of elemental composition of cosmic rays is curial to the origin of cosmic rays. However,the measurements of high energy cosmic rays are based on the ground experiments, the composition reconstruction depends on the hadronic interaction model and energy reconstruction, so large uncertainties are introduced in the measurements. In this paper, we proposed a n ... More
Presented by Chong WANG, Min ZHA, Lingling MA, Zhiguo YAO, Huihai HE, Shoushan ZHANG, Zhen CAO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 047
Muon detector (MD) is water Cherenkov detector in Large High Altitude Air Shower Observatory (LHAASO) experiment. The liner is applied to seal 44 ton ultra-pure water, which is the major detection media of MD. The liner must protect the water from contamination and inhibit bacteriological activities. The MD conducts a long duration mission (~20 years), so any significant leak would have severe con ... More
Presented by Lingyu WANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 041
In this paper a description of the electronics and trigger system of the High Energy Particle Detector (HEPD) onboard the China Seismo Electromagnetic Satellite (CSES) and its main characteristics will be presented. CSES is a scientific mission dedicated to monitoring electromagnetic, plasma and particles perturbations of atmosphere and inner Van Allen belts caused by solar and terrestrial phenome ... More
Presented by Valentina SCOTTI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 067
Interactions of cosmic-ray nuclei is the most well-understood contribution to the observed positron flux at the Earth. Various scenarios have been proposed, including sources in the spiral arms of the galaxies and nearby isolated sources, which can contribute to the measured flux. In our work we focus on sources such as the gamma-ray novae which can contribute to the observed positron flux, althou ... More
Presented by Jagdish Chandra JOSHI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 065
Radio Galaxies (radio-loud AGNs) are common in galaxy cluster media (ICMs). In addition to their potential thermodynamical roles, these AGN may also serve to illuminate important ICM dynamical features, especially ICM shocks. Those interactions are revealed most clearly by radio synchrotron emissions from associated AGN Cosmic Ray Electrons (CRe). Here we report results from "MHD+CR" simulations o ... More
Presented by Thomas JONES on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 064
Cosmic ray particles can be accelerated in the supernova. A protoneutron star is formed in a few seconds after the supernova explosion of a massive star. Neutron stars may be one of cosmic ray sources. Therefore, the study of structure of protoneutron stars is significant to investigating the origin and acceleration of cosmic rays. The hyperons interaction mediated by strange mesons and the struct ... More
Presented by Xueling MU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 039
The Cosmic Ray Energetics And Mass experiment for the International Space Station (ISS-CREAM) is scheduled for launch in 2017. It is designed to directly measure and identify the elemental composition of incident Galactic cosmic rays from a few hundred GeV to PeV energies. Such large energy range sensitivity is reached by using an electromagnetic sampling calorimeter (CAL) which measures the energ ... More
Presented by Nicolas PICOT-CLEMENTE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 038
The Boron And Carbon Cosmic rays in the Upper Stratosphere (BACCUS) balloon-borne experiment flew for 30 days over Antarctica in December 2016. It is the successor of the CREAM balloon program in Antarctica which recorded a total cumulative exposure of 161 days. BACCUS is primarily aimed to measure cosmic-ray boron and carbon fluxes at the highest energies reachable with a balloon or satellite exp ... More
Presented by Nicolas PICOT-CLEMENTE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 027
The Calorimetric Electron Telescope (CALET) is a space mission installed on the Exposed Facility of the Japanese Experiment Module (JEM-EF) of the International Space Station in August 2015 and collecting data since October 2015. In addition to high precision measurements of the electron spectrum up to TeV scale, CALET will also investigate the mechanism of cosmic-ray (CR) acceleration and propaga ... More
Presented by Paolo MAESTRO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 005
In August 2015, the CALET (CALorimetric Electron Telescope)instrument, designed for long exposure observations of high energy cosmic rays, docked with the ISS (International Space Station) and shortly thereafter began to collect data. CALET will measure the cosmic ray electron spectrum over the energy range of 1 GeV to 20 TeV with a very deep calorimeter with both total absorption and imaging (TAS ... More
Presented by Ryohei MIYATA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 021
In August 2015, the CALorimetric Electron Telescope (CALET), designed for long exposure observations of high energy cosmic rays, docked with the International Space Station (ISS) and began to collect data about two months later. CALET will measure the cosmic ray electron spectrum over the energy range of 1 GeV to 20 TeV with a very high resolution of 2% above 100 GeV, based on a dedicated instrume ... More
Presented by Yuma KOMIYA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 026
The 10 years of measurements with the PAMELA calorimeter and neutron detector were used to probe the dipole anisotropy within the selected events. These events contain mostly electrons and positron with the partial contamination of nuclei of about a few tens of percent. The electron and positron energy ranged between 10 GeV and 1 TeV. The preliminary results are presented. They complement the prev ... More
Presented by Alexander KARELIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 029
During thunderstorms, radio emission from extensive air showers are influenced by atmospheric electric fields. These effects are observed at LOw Frequency ARray (LOFAR) radio telescope. We have presented a non-intrusive method to determine the atmospheric electric fields by using the intensity data of the radio signals. We have developed a method by using not only the intensity data but also the p ... More
Presented by Gia TRINH on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 003
The search for anisotropies in cosmic ray arrival directions with space experiments like the Alpha Magnetic Spectrometer (AMS-02) on the International Space Station is subject to a number of time- and energy dependent effects. Many of these systematics originate from the detector, the orbit and space weather: Selection efficiencies may vary as a function of detector position in the Earth's magneti ... More
Presented by Iris GEBAUER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 024
Maury Goodman for the NOvA collaboration Seasonal variations of cosmic ray muons have been well-measured by a number of underground experiments at a variety of overburdens and it has been found that the rate of muons increases in the summer and decreases in the winter. This is understood from the properties of the atmosphere as the temperature varies. We have measured with large statistics the sea ... More
Presented by Alec HABIG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 014
The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) instrument is designed and built to measure elemental spectra of cosmic-ray nuclei (1 ≤ Z ≤ 26) and electrons. It will measure energy of incident cosmic rays from 10^11 to 10^15 eV with a tungsten/scintillator sampling calorimeter and densified carbon target with an interaction length of ~ 1 λ_L. A finely segme ... More
Presented by Jacob SMITH on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 028
The search for anisotropies in cosmic ray arrival directions requires knowledge of the expected measurement in case of isotropic cosmic ray arrival directions. This expected measurement can then be used as a reference to search for deviations from the isotropic case in data. Two types of anisotropies are commonly cited in the literature: (i) relative anisotropies where the arrival directions of ot ... More
Presented by Miguel Angel VELASCO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 057
In the Polar Geophysical Institute a complex set was developed for secondary cosmic rays monitoring. The set integrates detectors of neutron, charged (electron-muon) and electromagnetic components of secondary cosmic rays. Data are recorded continuously with the resolution of 1 minute. Besides, by means of the scintillation detector on a Ø150×110 mm NaI(Tl) crystal, the differential spectrum of ... More
Presented by Yury BALABIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 025
Nitrogen nuclei in cosmic rays are believed to be produced both in the supernova and by collisions of heavier nuclei, such as oxygen, with interstellar matter. Knowledge of the rigidity dependence of the nitrogen flux is important in understanding of the propagation of both primary and secondary cosmic rays. A precision measurement of the nitrogen flux from 2 GV to 3 TV is presented based on 2 mil ... More
Presented by Valerio FORMATO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 059
We compute the spectra of cosmic-ray (CR) nuclei and anti-nuclei under a scenario where hadronic interaction processes inside supernova remnants (SNRs) can produce a diffusively-shock-accelerated “source component” of secondary particles. This scenario is able to explain the recent measurements reported by AMS on the antiproton/proton ratio, that is found to be remarkably constant at ∼60-450 ... More
Presented by Alberto OLIVA, Nicola TOMASSETTI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 072
Antimatter nuclei in cosmic rays (CRs) are promising tool for the indirect detection of dark-matter annihilation signatures. However, the search of new-physics signals in CRs relies on our knowledge of the astrophysical antimatter background which, in turns, depends critically on the several fragmentation cross-sections that regulate production and destruction of antiparticles in the interstellar ... More
Presented by Jie FENG, Nicola TOMASSETTI, Alberto OLIVA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 070
The precise measurements of cosmic ray fluxes and ratios by AMS-02 enable significantly improved constraints on the propagation models of cosmic rays. Here we use the newly reported Boron-to-Carbon ratio (B/C) from AMS-02 and the time-dependent proton fluxes from PAMELA and AMS-02 to constrain the source and propagation parameters of cosmic rays in the Milky Way. A comprehensive set of propagation ... More
Presented by Qiang YUAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 007
Knowledge of the rigidity dependence of the carbon-to-oxygen (C/O) flux ratio provides important insights to the origin, acceleration, and subsequent propagation processes of cosmic rays in the Galaxy. At high rigidities, the C/O flux ratio directly measures the relative production and acceleration properties of carbon and oxygen. At low rigidities, the C/O flux ratio also measures the average amo ... More
Presented by Yang LI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 013
The Cosmic Rays Energy And Mass (CREAM) balloon payload directly measures the composition and elemental spectra of cosmic rays in the upper stratosphere. It is designed to probe the acceleration mechanism and propagation history of cosmic rays at energies from 10e12 up to 10e15 eV. Being the fifth flight in a series of seven, CREAM-V took data above Antarctica for 39 days from December 1st 2009 to ... More
Presented by Jacob Russell SMITH on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 008
The balloon-borne BACCUS experiment measures directly the elemental spectra of cosmic-ray nuclei from protons to Fe over the energy range ~10^12 to 10^15 eV. It focuses on the energy dependence of secondary to primary ratios (e.g. B/C) to investigate cosmic-ray propagation history. BACCUS consists of redundant and complementary particle detectors including the Timing Charge Detector (TCD), Transit ... More
Presented by Ki Chun KIM on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 017
The CALorimetric Electron Telescope (CALET) was launched to the International Space Station (ISS) on August 19, 2015 (JST), and has been returning science data since October 13, 2015 (JST). Through the main calorimeter (CAL), CALET observes the fluxes of high-energy electrons, gamma rays and nuclei. CALET measures the energy spectra of the more abundant cosmic-ray nuclei through 26Fe passing withi ... More
Presented by Yosui AKAIKE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 011
The powerful Jovian magnetic field generates a magnetosphere where electrically charged particles, like electrons and protons, can be trapped and then injected into space through acceleration mechanisms. We have investigated whether the proton data measured by the PAMELA space experiment (from 9 July 2006 to 31 August 2014) show a signature which could be attributed to Jupiter itself. We notice la ... More
Presented by Marco RICCI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 019
We present precision monthly measurements of the cosmic-ray electron and positron fluxes in the energy range from 0.5 to 50 GeV with the Alpha Magnetic Spectrometer on the International Space Station. Individual electron and positron spectra have been measured for every Bartels rotation period (27 days) in the time range from May 2011 to November 2016, that covers the solar maximum of solar cycle ... More
Presented by Valerio VAGELLI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 052
The response to primary and fragmented lead test beams measured by prototype silicon strip detectors, designed for use in the Heavy Nuclei eXplorer (HNX) and the Trans-Iron Galactic Element Recorder on the International Space Station (TIGERISS) experiments, was evaluated in a CERN test beam in Nov - Dec 2016. The 500 um thick, single-sided prototype silicon detectors have 32 DC-coupled strips with ... More
Presented by John KRIZMANIC on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 010
The High-Energy Particle Detector (HEPD) is one of the payloads of the CSES space mission, built by the Italian “Limadou” collaboration. It will study the temporal stability of the inner Van Allen radiation belts, the precipitation of trapped particles in the atmosphere and the low energy component of the cosmic rays (5 - 100 MeV for electrons and 15 - 300 MeV for protons). Results of the test ... More
Presented by Beatrice PANICO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 006
The most likely origins of high-energy galactic cosmic-ray electrons are believed to be localized in nearby young supernova remnants (SNRs) because of the energy losses by the inverse Compton scattering or synchrotron radiation. So it is expected that the energy spectrum of the GCR electrons in the TeV region that would be presented by CALET and DAMPE in the near future provides a crucial test of ... More
Presented by Shoko MIYAKE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 022
GRAINE2015 is a balloon borne emulsion chamber launched on May 6, 2015 and its acceptance and flight duration is 3780m2 sr and 14 hours at 37km above sea level, respectively. The main scientific goals of GRAINE2015 are the precise measurement of sub GeV gamma-rays from Vela pulsar, the measurement of charm particle production cross section at high altitude in the air and the study of cosmic ray nu ... More
Presented by Atsushi IYONO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 023
Simultaneous distribution between the deflection angle and the lateral displacement of fast charged particles traversing through matter have already been derived by applying numerical inverse Fourier transforms on the Fourier spectral density solved analytically under the Moliere theory of multiple scattering, taking account of ionization loss. This simultaneous distribution became valuable for im ... More
Presented by Atsushi IYONO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 063
The ISS-based Calorimetric Electron Telescope (CALET) is directly measuring the energy spectrum and direction distribution of electron+positron cosmic-rays up to 20 TeV. A main goal of CALET is to identify a signature of a nearby supernova remnant (SNR) in electron+positron cosmic-rays. The Vela SNR has the highest potential to cause a spectral feature in the TeV region and/or a detectable anisotr ... More
Presented by Holger MOTZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 051
The operating principles of Neutron Monitors are nuclear reactions within the proportional counters. The output signal of these is an electric pulse for every secondary cosmic ray particle that interacts with the detector. The amplitude of the pulse signal reflects the amount of charge generated on each individual interaction. The estimated pulse height distribution provides an energy resolution i ... More
Presented by Rocío GARCÍA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 030
Ultra-Fast Flash Observatory pathfinder(UFFO-p) was launched onboard Lomonosov on 28th of April, 2016, and now is under a various types of calibration for detection of Gamma Ray Burst(GRB)s. Since last September UFFO-p has taken X-ray data in space with UFFO Burst Alert Trigger telescope(UBAT), those X-rays are mostly diffused backgrounds however, the rate turns out to be higher than expected by a ... More
Presented by Hyomin JEONG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 042
The DArk Matter Particle Explorer (DAMPE) satellite is a powerful space detector launched on the 17th December 2015. The main objectives of the mission are in the research of Dark Matter signatures thanks to the detection of electrons and photons in an energy range going from few GeV up to 10 TeV. Moreover, insights on the origin and propagation mechanisms of the cosmic rays are also expected than ... More
Presented by Xin WU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 015
The DArk Matter Particle Explorer (DAMPE) is a satellite-borne device for detecting high energy electrons, gamma-rays, protons and heavy-ions in space. The Plastic Scintillator Detector (PSD) is the top-most of the four sub-detectors of DAMPE, which was designed to measure charge of incident high-energy particles. It also serves as a veto detector for discriminating gamma-rays from charged particl ... More
Presented by Yapeng ZHANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 048
Solar neutrons can be probles for clarifying the ion acceleration mechansm in the Sun. However,t there are only a few 10 detections up to present. The SEDA-AP Fiber detctor on the International Space Station (ISS) has been currently observing solar neutrons from space. We have developped very compact solar neutron and gamma-ray monitor for the micro satellite ChubuSat-2 utilizing the multi-pixel p ... More
Presented by Kazutaka YAMAOKA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 053
An Instrument for an exotic particle search (INSTEPS) in cosmic rays is proposed for detailed investigation of cosmic ray flux in the charge region 0.5 - 2 m.i.p., where a few strange results have been registered. These results could not be understood because of poor charge resolution. There is also 0.1 – 0.5 m.i.p. region, which is practically unknown because of a limited signal to noise ratio. ... More
Presented by George BASHINDZHAGYAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 036
The next generation of experiments devoted to study extreme energy cosmic rays will be at space platforms. Recent satellite missions have shown that the UV light background is more complex than previous models. Therefore, the observation of transient luminous events TLEs at the upper atmosphere will be important. Information about the time and space evolution of this very fast events may need to b ... More
Presented by Epifanio PONCE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 037
The nature and origin of cosmic rays remains one of the greatest puzzles of modern astrophysics after more than 50 years since their first registration. Several ground experiments have reported the rate registered at its height of operation. To continue with the study of cosmic rays, we propose obtain the rate at different heights in the Earth's atmosphere, developing a small and portable ultravio ... More
Presented by Epifanio PONCE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 073
The abundance of accelerators and the ambient conditions make Cygnus X and the Galactic Center a natural laboratory for studying the life cycle of cosmic-rays (CRs). This naturally makes them a highly interesting source in neutrino astronomy, in particular concerning a possible detection with the IceCube Neutrino Observatory. In this paper, we model the multiwavelength spectrum of the Cygnus X, fo ... More
Presented by Mehmet GUENDUEZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 004
CALET is the long-term high energy cosmic ray observation mission on JEM-EF of the International Space Station. In order to extend measurements of electrons and gamma rays to the 10-20 TeV region and protons and nuclei to several hundred TeV, the CALET calorimeter (CAL) has a thickness of 30 radiation lengths. CAL is composed of a lead tungstate (PWO) Total AbSorption Calorimeter (TASC), a tungste ... More
Presented by Ozawa SHUNSUKE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 058
Silicon Photomultipliers (SiPM) are small solid state photodetectors which can provide single photon counting with high quantum efficiency, fast response and good charge resolution. These devices have similar gains (10^6) as photomultiplier tubes but operate with a much lower bias ( < 60V). Many experiments are looking to use these devices instead of PMTs and ground-based experiments such as CMS, ... More
Presented by Jason LINK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 031
UFFO Burst Alert and Trigger telescope (UBAT) is the X-ray trigger telescope of UFFO/Lomonosov to localize X-ray source with coded mask method and X-ray detector. Its X-ray detector is made up of 36 8x8 pixels Yttrium OxyorthoSilicate (Y2SiO5:Ce, YSO) scintillator crystal arrays and 36 64-channel Multi-Anode PhotoMultiplier Tubes (MAPMTs) for space mission. Its effective detection area is 161cm2 ... More
Presented by Min Bin KIM on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 032
The goal of Super Fluorescence Air SHower (sFLASH) is to reduce the current fluorescence yield systematic uncertainty to improve energy measurement of ultra-high energy cosmic rays. The experiment was performed at SLAC National Accelerator Laboratory to measure the air fluorescence yield from extensive air showers. A set of alumina target is placed in the electron beam to create a cascade in the a ... More
Presented by JianJung HUANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 054
TAROGE is an antenna array on the cliff of Taiwan’s east coast to monitor ultra-high energy cosmic rays (UHECR, > 10^19 eV). The antennas face the Pacific Ocean to detect radiowaves signals emitted by the UHECR-induced air shower. The unique terrain of the TAROGE site allows the antennas to collect both the direct-emission and the ocean-reflected radiowaves signals induced by UHECR. So far two T ... More
Presented by Tsungche LIU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 049
SiRO is a detector measuring the flux and trajectory of cosmic muons, based on plastic scintillators, optical fibers (wavelength shifters) and readout by SiPM(MPPC-Multi Pixel Photon Counter) devices. The Detector is consisting of a stack of 6 active layers, grouped by 2 for determining the muon trajectories through 3 planes. One module has 24 plastic scintillators stripes with 2 fiber mounted on ... More
Presented by Bogdan MITRICA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 050
From the investigation of ancient pyramid to the frontier’s surveillance, the muon flux is currently used for commercial and scientific purposes. In IFIN-HH Romania, the muon tomography represents a very important research area, several application being currently under investigation. The geological studies of old mining sites and the custom control are presently on preparation, using new muon d ... More
Presented by Bogdan MITRICA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 035
The main goal of the High-Energy Ray Observatory (HERO) mission is to perform direct measurements of very high energy cosmic ray. Measurements will concern the following scientific goals: detailed study of charge composition of CR in knee region, studies of the energy spectra of Galactic and extragalactic CR, search for signatures of dark matter particles. HERO is planned to be launched onboard a ... More
Presented by Andrey TURUNDAEVSKIY on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 068
The Fermi-LAT Collaboration has recently reported a new measurement of the inclusive cosmic-ray positron and electron spectrum in the energy range between 7 GeV and 2 TeV, obtained with almost seven years of all sky data processed with the Pass 8 event reconstruction. In this poster we discuss several interpretations of these results within a model where electrons and positrons are emitted by supe ... More
Presented by Andrea VITTINO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 043
The DArk Matter Particle Explorer (DAMPE)can operate properly while crossing the South Atlantic Anomaly(SAA). Due to the high flux of cosmic rayin the SAA, the collected data within SAA may not be used for scientific observations. Based on the data from DAMPE, we improve the definition of SAA with more precise determination of the boundary.
Presented by Wei JIANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 033
We measured the production of $^{12}B$ and $^{12}N$ in the organic liquid scintillator. The delayed coincidence method has been used to determine the production of unstable isotopes. These isotopes are critical in understanding background in underground detectors used for rare events search. They are produced by cosmogenic-neutron interactions in the detectors. The production rates were measured a ... More
Presented by Makhti KOCHKAROV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 040
A new Cosmic Ray DataBase (CRDB) is under development at the ASI Science Data Center, a facility of the Italian Space Agency (ASI) that provides support to several space missions and acts as a multi-mission science operation, data processing and data archiving center. To ensure a more extensive utilisation of space data from existing, archived and future missions, on-line access to archival data, ... More
Presented by Cecilia PIZZOLOTTO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 018
The CALorimetric Electron Telescope, CALET, was installed on the International Space Station in August 2015 and it has been collecting data of high energy cosmic rays since October 2015. The primary purpose of CALET mission is obtaining high-precision direct measurements of the electron+positron spectrum up to the multi-TeV energy region, which can provide unique information on the presence of nea ... More
Presented by Yosui AKAIKE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 002
The isotopic compositions of cosmic ray nuclei are of great interest since they directly reflect processes related to cosmic ray propagation through the galaxy. In six years of data taking, AMS has collected the largest available data set on fluxes of nuclei. For a selected nuclear charge value, the velocity and rigidity give a measurement of particle mass that allows measurement of relative isoto ... More
Presented by Matthew BEHLMANN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 001
Lithium nuclei in cosmic rays are believed to be produced exclusively by collisions of heavier cosmic rays such as Be,B,C,N,O with the interstellar matter. Data from the previous experiments are limited and inconsistent. A precise measurement of the lithium flux from 2 GV to 3 TV, based on 2 million events collected by AMS in the first five years of operation, is presented. The detailed variation ... More
Presented by Laurent DEROME on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 077
Recently cosmic ray spectrum measurements made by Pamela and AMS-02 spectrometers showed that in the wide energy interval the spectra of protons and alfa-particles cannot be described with the constant exponent in the power law. It means that cosmic ray particles have the other sources of cosmic rays addition to supernova explosions. Such sources could be active dwarf stars. Such stars (for exampl ... More
Presented by Yuri STOZHKOV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 034
Collider experiment is an efficient way to verify and improve the hadronic interaction models. Abundant of energy flow in the forward region of the collisions are believed to have large influence to the development of air-shower. LHCf is the experiment dedicate to verify the models by measuring the forward neutral particle production at the LHC. According to the LHCf results, no simulation model c ... More
Presented by Qidong ZHOU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 009
The diurnal variation of cosmic ray intensity is measured by ground neutron monitor. The local time of maximum cosmic ray intensity is dependent on latitudinal location. Depending on solar activity, drift and diffusion effect control the local time of maximum intensity for cosmic ray intensity (Oh et al., 2010). Recently, we installed two neutron monitors at Daejeon in South Korea (October 2011) a ... More
Presented by Jongil JUNG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 016
We present an updated measurement of the cosmic-ray electron and positron spectrum between 7 GeV and 2 TeV, based on 7 years of data collected with the Fermi Large Area Telescope (LAT). The LAT is the first space-based instrument to directly explore the region above 1 TeV. At such high energies, the shape of the spectrum can provide useful information about the origin and propagation of cosmic-ray ... More
Presented by Alberto MANFREDA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 060
Supernova remnants have been considered as the main source of Galactic cosmic rays. In order for supernova shock fronts to accelerate cosmic rays to the knee energy of ~5 PeV, the interstellar magnetic field must be amplified to ~ mG range over a large distance upstream of the shocks. Theory for such strong magnetic field amplification is challenging, and strongly modified supernova shocks may res ... More
Presented by Ming ZHANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 055
Abstract The possible realization of the wide FoV and large pupil Schmidt recently proposed for a space instrument opens the possibility of realizing even more large pupil optical telescopes in space. This development is important for the realization of space observatories dedicated to the observation of the terrestrial surface and events in the terrestrial atmosphere, as well for astronomical obs ... More
Presented by Piero SPILLANTINI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 056
The possible realization of the wide FoV and large pupil Schmidt recently proposed for a space instrument opens the possibility of realizing even more large pupil optical telescopes in space. This development is important for the realization of space observatories dedicated to the observation of the terrestrial surface and events in the terrestrial atmosphere, as well for astronomical observations ... More
Presented by Piero SPILLANTINI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 071
The USINE code is a semi-analytical code to solve the transport equation of Galactic cosmic ray nuclei and predict their flux at the Earth from MeV to TeV. This code is then very suitable to perform extensive scan over parameters describing the Galactic properties and the propagation mechanisms, comparing a model to data for different cosmic ray species. This poster present the recent developments ... More
Presented by Mathieu BOUDAUD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 075
The Fermi paradox is the discrepancy between the strong likelihood of alien intelligent life emerging (under a wide variety of assumptions) and the absence of any visible evidence for such emergence. We study the influence of gamma-ray bursts, dark clouds, and Galactic cosmic rays in addressing this intriguing unlikeness.
Presented by Jorge FERNANDEZ SORIANO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 046
In Circum-Pan-Pacific Earthquake Belt, large-scale architectures are exposed to a danger of big earthquakes. In Japan, about 9,600 bridges on highways have been exposed to severe natural environment and hard wares over 50 years after construction. Aging effects in these architectures are worried to cause serious deterioration and accidents by earthquakes. It is urgently required to develop a nonde ... More
Presented by Takuro FUJIMAKI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 069
​​​​​The High Energy cosmic-Radiation Detection (HERD) facility is a flagship and landmark scientific experiment onboard China's Space Station, planned for operation starting around 2025 for about 10 years. The HERD international consortium is composed of many institutions in China and Europe, as well as other countries. The main scientific objectives of HERD are indirect dark matter sea ... More
Presented by Shuang-Nan ZHANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 028
Due to their extremely high particle energies (up to 10^20 eV), cosmic rays are ideally suited to search for violations of Lorentz invariance. We consider isotropic, nonbirefringent Lorentz violation in the photon sector and specialize to the case of a photon velocity larger than the maximum attainable velocity of standard Dirac fermions. Up to now, bounds on this type of Lorentz violation have be ... More
Presented by Frans R. KLINKHAMER, Markus RISSE, Marcus NIECHCIOL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 050
In the neutrino physics the direct measurement of the cosmogenic neutrino at energy of 10^15 − 1018 eV is still a challenging item. The most resent analysis of IceCube data results in an energy spectrum between 10^13 and 10^16 eV. We present the preliminary results of detailed Monte Carlo simulation of tau-induced air shower. In this study we consider the higher tau decay branching ratio (π− ... More
Presented by Ali YILMAZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 081
As a first step of constructing Alborze-I array, its central cluster operation started in November 2016. The Alborze-I is an array with 20 scintillation detectors designed to study cosmic particles about the knee region and it is placed in Sharif University of Technology campus in Tehran at 1200m a.s.l. The central cluster of this array is consist of 5 scintillation detectors placed at the vertice ... More
Presented by Mustafa HEYDARIZAD on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 149
The sidereal time cosmic ray large-scale anisotropy with amplitude of 10−4–10−3 has been firmly detected by a number of experiments from sub-TeV to PeV. The angular phase is approximately stable for energies below 100 TeV, while the amplitude increases with energy, reaching the maximum around 10 TeV. Different models have been proposed to explain the origin of the anisotropy, concerning diff ... More
Presented by Songzhan CHEN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 185
The presence of dense molecular clouds in the close vicinity of an astrophysical accelerator as a supernova remnant (SNR) affects the spectrum of accelerated particles, modifying the expected f(E)=E^{-2} behavior as derived in the diffusive shock acceleration scenario. Indeed, when a shock passes through a dense medium, magnetic field amplification is realized because of the turbulent motion of pl ... More
Presented by Silvia CELLI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 153
We present the results of the analysis of cosmic rays spectrum in energy domain above 10^17 eV. The analysis covers extensive air showers registered over the course of continuous observations from 1974 to 2017. A new refined relation was applied to reconstruct primary energy in individual events. It was derived from the lateral distribution of responses of surface and underground detectors of the ... More
Presented by Artem SABOUROV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 014
The Pierre Auger Collaboration has reported an excess in the number of muons of a few tens of percent over expectations computed using extrapolation of hadronic interaction models tuned to accommodate LHC data, Very recently, we proposed an explanation for the muon excess assuming the formation of a deconfined quark matter (fireball) state in central collisions of ultrarelativistic cosmic rays wit ... More
Presented by Jorge FERNANDEZ SORIANO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 196
Supernova remnants are known to accelerate cosmic rays for their non-thermal emission of radio waves, X-rays, and gamma-rays. Although there are many models for the acceleration of cosmic rays in supernova remnants, the escape of cosmic rays from this sources is yet understudied. We use our time-dependent acceleration code to study the acceleration of cosmic rays and their escape from supernova re ... More
Presented by Robert BROSE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 051
An array including 5 scintillation detectors in a pentagon configuration, similar to the central cluster of Alborz-1, is constructed at the biggest building rooftop of Sharif University of Technology (the same location of Alborz-1 proposal). Data of 10 week operation is used to get the average daily Rate of CR detection. Comparing obtained experimental value of daily rate (2697) by that of simulat ... More
Presented by Masoume REZAIE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 179
A major feature of the energy spectrum of the cosmic radiation above 10**19 eV is the increasing fraction of heavy nuclei with respect to light nuclei. This fact, along with other simple assumptions, is adopted to calculate the energy spectrum of the cosmic radiation up to 2.4x10**21 eV . The predicted spectrum maintains the index of 2.67 observed at lower energies which is the basic, known, well- ... More
Presented by Antonio CODINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 126
After huge advancements in SiPM technology made in the last years, they are perfect sensors for light detection in astroparticle physics experiments. They are very robust devices and have an equal or higher photon detection efficiency than conventional photomultiplier tubes (PMTs). In addition, SiPMs can be precisely calibrated exploiting their single photon resolution. We study their performance ... More
Presented by Julian KEMP on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 071
A neutron spectrometer network composed by several high-altitude stations was developed by the French Aerospace Lab. thanks to an advanced Bonner Sphere System extended to high energies. This instrument can measure the neutron spectrum over a wide energy range from meV up to tens of GeV with a short time resolution, allowing to investigate solar flare and seasonal variations. The first instrument ... More
Presented by Guillaume HUBERT on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 080
The Extreme Universe Space Observatory (EUSO) is designed to detect the highest energy particles in the Universe by observing the fluorescence and (reflected) Cherenkov light produced when these ultrahigh energy cosmic rays (UHECR) traverse the Earth's atmosphere. Unlike existing cosmic ray observatories, EUSO will view the atmosphere from above. A number of pathfinder missions have been completed ... More
Presented by Thomas PAUL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 079
EUSO-TA is a ground-based cosmic ray fluorescence detector, pathfinder of the JEM-EUSO experiment, installed in 2013 at the Telescope Array (TA) site, in front of a TA fluorescence detector station, and completed with the focal surface in 2015, when it started to be operative. The data acquisition works in coincidence with TA, and this guarantees an easy identification of the cosmic ray events det ... More
Presented by Thomas PAUL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 021
This work describes the system of tracking detectors operating at the Yakutsk complex EAS array. A technique is given for calculation of number of photons arriving from different heights of the atmosphere from the detector response and, thus, to reconstruct the longitudinal development of individual showers. We present the results of direct observations of the cascade curve and give the depth of m ... More
Presented by Valentina MOKHNACHEVSKAYA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 138
We will present the Data Processor (DP) and the flight software of EUSO-SPB. The EUSO-SPB experiment is a pathfinder mission of the EUSO program having as main objective to detect Ultra-High Energy Cosmic Rays (UHECR) by measuring, for the first time from the space, the fluorescence and the Cerenkov light produced by the interaction of the particle with the nuclei of the Earth’s atmosphere. The ... More
Presented by Valentina SCOTTI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 092
EUSO detectors are high-resolution fluorescence telescopes dedicated for measurements of ultra-high energy cosmic rays (UHECR). EUSO-TA is pathfinder experiment dedicated for testing of EUSO detectors and measurements of UHECR in coincidence with Telescope Array (TA) experiment. EUSO-TA is located in front of the Black Rock Mesa (BRM) detectors of the TA experiment. During few campains in years 20 ... More
Presented by Zbigniew PLEBANIAK on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 186
CRPropa is a public astrophysical simulation framework for studying propagation and interaction physics of primary and secondary cosmic ray particles. We have incorporated particle acceleration within CRPropa and studied the effects of geometry on the resulting spectral index in diffusive shock acceleration. In this contribution, we present our results and compare them to analytical calculations. ... More
Presented by Tobias WINCHEN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 111
LOPES, the LOFAR prototype station, was the radio extension of the KASCADE-Grande particle-detector array for cosmic-ray air showers. In different stages LOPES consisted of up to 30 antennas measuring the radio emission of air showers between 40 and 80 MHz with an energy threshold of around 100 PeV. Despite of the external trigger by the particle detectors, the separation of the air-shower signal ... More
Presented by Frank SCHRÖDER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 154
The Yakutsk array dataset in the energy interval $(10^{17},10^{19})$ eV is re-visited in order to interpret zenith angle distribution of extensive air shower event rate. Close relation of the distribution to the attenuation of the main measurable parameter of showers, $S_{600}$, is examined. The threshold effect on fluctuations of the parameter is essential to calculate the acceptance area of the ... More
Presented by Anatoly IVANOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 082
The Extreme Universe Space Observatory on a super pressure balloon (EUSO-SPB) instrument is a pathfinder for space based cosmic ray fluorescence detectors. It was launched from Wanaka, New Zealand by NASA on the 24th of April 2017(UTC). The optical system of the instrument consists of 2 Fresnel lenses. The focal surface is a photomultiplier based, single photon counting camera with 2304 pixel and ... More
Presented by Johannes ESER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 105
The Large High Altitude Air Shower Observatory (LHAASO), to be built at 4410 m a.s.l. near the Daocheng in the Sichuan province of China, is a new generation EAS array. It consists of three kinds of detector arrays. KM2A is the main array of LHAASO and is composed of 5195 scintillator detectors and 1171 muon detectors, which are distributed in an area of 1.3 km2. In this work, we study the trigger ... More
Presented by Zuo XIONG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 112
The Mini-EUSO instrument is designed by the JEM-EUSO collaboration to pave the way for space-based observations of Extreme Energy Cosmic Rays. To be placed inside the ISS later this year, it is a small UV (300 - 400 nm) telescope which will observe the Earth’s atmosphere with a spatial resolution of 5 km. Mini-EUSO is capable of detecting a wide variety of UV events such as cosmic ray signals, t ... More
Presented by Francesca CAPEL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 113
The Mini-EUSO telescope is designed by the JEM-EUSO Collaboration to observe the UV emission of the Earth from the vantage point of the International Space Station in low Earth orbit. The main goal of the mission is to map the Earth in the UV, thus increasing the technological readiness level of future EUSO experiments and to lay the groundwork for the detection of Extreme Energy Cosmic Rays from ... More
Presented by Francesca CAPEL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 097
The KASCADE Cosmic Ray Data Centre (KCDC) is a web-based platform to provide the astroparticle physics data for the general public. KASCADE and its extension of KASCADE-Grande fully completed the data accumulation at the end of 2013 after more than 20 years of measurements. The main purpose of KCDC is to archive original data such as from KASCADE to offer long-term scientific data for the high- en ... More
Presented by Donghwa KANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 098
We present the optical design of the baseline solution for the telescope of the KLYPVE-EUSO UHECR experiment. The adopted optical layout is a Schmidt camera covering a field of view of 40 degrees with an entrance pupil diameter of 2.5m, a 4m diameter spherical mirror and a focal length of 1.7m. The resulting very fast relative aperture (F/# 0.7) minimizes the detector size and its obstruction, res ... More
Presented by Paolo SANDRI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 057
The surface detector array of the Pierre Auger Observatory consists of 1660 water-Cherenkov detectors that sample the charged particles and photons of air showers initiated by energetic cosmic rays at the ground. Each detector records data locally with timing obtained from GPS units and power from solar panels and batteries. In the framework of the upgrade of the Auger Observatory, AugerPrime, new ... More
Presented by Tiina SUOMIJARVI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 059
The surface detector array of the Pierre Auger Observatory consists of 1660 water-Cherenkov detectors (WCDs) that sample the charged particles and photons of air showers initiated by cosmic rays of very high energy. With the AugerPrime upgrade, the collaboration aims to increase the particle identification capability of the surface detectors. Scintillator surface detectors (SSDs) will be added abo ... More
Presented by Zizhao ZONG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 058
The LHAASO (Large High Altitude Air Shower Observatory) project, which is under construction at high altitude of 4400m a.s.l. in Sichuan, China, aims to observe the extensive air showers (EAS) induced by cosmic rays in the atmosphere. LHAASO consists of several large detector arrays including KM2A (1 km2 array), WCDA (Water Cherenkov Detector Array) and WFCTA (Wide Field of view Cherenkov Telescop ... More
Presented by Zizhao ZONG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 063
The EUSO-SPB (EUSO super pressure balloon) experiment is designed to make observations of fluorescence light from Extreme Energy Cosmic Ray (EECR) Extensive Air Showers (EASs) by looking down on the atmosphere from above. The flight lasted for 13 days with a total of more than 30 hours of observations on dark nights. The balloon was launched on April 24, 2017, from Wanaka New Zealand. A navigation ... More
Presented by Malek MASTAFA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 121
In order to study the long-term stability of plastic scintillaotr for LHAASO-KM2A, thermal aging tests of materials(BC-408, ND-100, HND-S2) were made. A forecast of tile operational time was made for normal conditions of usage( 20% redution of light output).The plastic scintillator operational time can be estimated and its lifetime is determined from an Arrhenius plot.
Presented by Hongkui LV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 128
As the new generation of ground-based experiment, LHAASO-KM2A is aimed at unlocking the mystery of the century—the origin of high energy cosmic ray in the galaxy by probing the ultra-high energy gamma ray. The “triggerless” data acquisition system that KM2A uses will provide a solid platform for trigger selection research of the ground particle array experiment. The paper proposes to reduce ... More
Presented by Jia LIU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 192
Galactic cosmic-rays (CRs) are expected to be accelerated in supernova remnants (SNRs). The behavior of the CRs is significantly affected by the magnetic field nature. However, it is open issue in the SNRs. Polarized synchrotron measurements can provide valuable information on the magnetic field. Indeed, in terms of turbulent magnetic field in inter stellar medium (ISM), it was shown that the corr ... More
Presented by Jiro SHIMODA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 144
SEARCH COSMIC RAYS SOURCES OF ULTRAHIGH ENERGY Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy, 31 Lenin Ave., 677980, Yakutsk, Russia. A.A. Mikhailov. ABSTRACT Earlier we suggested a new method search of sources and anisotropy of arrival directions particles of ultrahigh energy. Here by this method we analyzed data of Yakutsk EAS array and found that main part of particles with ener ... More
Presented by Alexey MIKHAILOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 044
The goal of this study is to develop the mathematical and hardware complex for the improvement accuracy of the primary cosmic rays characteristics (the primary energy and mass) reconstruction. The complex is designed for ground and space based optical detectors for high and ultrahigh energy cosmic ray studies. In this paper the separation method based on the simultaneous recording light from one " ... More
Presented by Timur DZHATDOEV, Dmitry PODGRUDKOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 076
EUSO-SPB (Extreme Universe Space Observatory - Super Pressure Balloon) is the first path-finder mission of the JEM-EUSO program which hosts a trigger logic following the concept envisaged for the main mission. Prior to its implementation the logic has been tested offline by means of dedicated simulations and experimental data taken at the TurLab facility as well as by the previous path-finder miss ... More
Presented by Mario BERTAINA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 072
Silicon Photomultipliers (SiPM or MPPC) offer an alternative low light detector to Multi-Anode Photomultiplier Tubes with the benefits of low operating voltage, compact packaging and reduced susceptibility to damage. Design and construction of a Silicon photomultiplier Elementary Cell Add-on camera (SiECA) comprising front end opto-electric sensors, specifically designed ASIC signal processing chi ... More
Presented by Andreas HAUNGS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 133
Mini-EUSO (Extreme Universe Space Observatory) is a space mission developed by the JEM-EUSO International Collaboration, approved and selected by the Italian Space Agency (ASI) and, under the name “UV atmosphere”, by the Russian Space Agency Roscosmos, to be carried to the International Space Station (ISS) in one of the next planned launches. The Mini-EUSO instrument is a small, compact telesc ... More
Presented by Marco RICCI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 062
We describe the design and performance of the LIDRAE water Cherenkov air showers array installed at UFABC (23.6°S, 46.5°W, 750 m a.s.l.) to measure energy and arrival direction of primary cosmic rays with energies exceeding 100 TeV. The array is composed of three tanks filled with one thousand liters of water with a large aperture photomultiplier on the top cover of each tank overseen the water ... More
Presented by Marcelo Augusto LEIGUI DE OLIVEIRA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 109
The Telescope Array (TA) experiment detects air-showers induced by ultra high energy cosmic rays. The TA ground Surface particle Detector array (TASD) observed some short-duration bursts of air-shower like events. As reported at ICRC2015, these events are evidently correlated with lightning. Therefore, we have deployed detectors for lightning discharge in the vicinity of the TASD. We report the st ... More
Presented by Takeshi OKUDA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 049
The ALPACA is a new project which consists of a large air shower array (83,000 m^2) and a muon detector array (5,400 m^2) located at the altitude of 4,740 m near La Paz in Bolivia to observe 100 TeV gamma rays in the southern sky. The ALPAQUITA array is a prototype air shower array which will be constructed at the ALPACA site. This array consists of 45 scintillation counters of 1 m^2 in area each, ... More
Presented by Kazumasa KAWATA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 139
We describe the design and implementation of the University of Chicago Infrared Camera (UCIRC) built for monitoring cloud coverage during the EUSO-SPB flight (Extreme Universe Space Observatory on a Super Pressure Balloon). UCIRC uses two infrared cameras with different wavelength filters (10 micron and 12 micron) to capture images of cloud cover under EUSO-SPB. The two infrared images taken every ... More
Presented by Angela V. OLINTO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 137
We are developing a fluorescence detector (FD) calibration device called an Opt-copter which consists of an UV LED, high accuracy GPS and unmanned aerial vehicle (UAV). The opt-copter is a standard light source to be used to calibrate Telescope Array (TA) FDs. The primary characteristic of the opt-copter is its high portability which enables us to put the light source on any position we want in th ... More
Presented by Yuichiro TAMEDA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 135
The flux of the ultra high energy cosmic rays (UHECRs) is extremely low, hence we need a huge observatory for UHECR research. However the larger the scale of the observatory, the higher the construction cost. In order to realize the next generation UHECR observatory, we should reduce the cost, dramatically. Therefore, we are developing a simple structure fluorescence telescope. The telescope consi ... More
Presented by Mashu YAMAMOTO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 107
Wide-field Imaging Cherenkov Telescopes Array (WFCTA) is one of important detectors for the Large High Altitude Air Shower Observatory (LHAASO). Since the optical system of each telescope is reflective type with comparable smaller F-number, the acceptance angles of converging light on the focal plane are markedly large meanwhile present complicated distribution. We design and optimize a square lig ... More
Presented by Chong WANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 127
The Multiwavelength Imaging New Instrument of Extreme Universe Space Observatory (Mini-EUSO) will be devoted to study the UV light emission coming from Earth. It consists of a compact telescope with a large field of view (40x40 sq. deg.) based on an optical system with two Fresnel lenses and a filter. The light is focused into an array of photo-multipliers tubes and the resulting signal is convert ... More
Presented by Sara TURRIZIANI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 045
The Telescope Array (TA) is an international experiment studying ultra-high energy cosmic rays. TA employs the fluorescence detection technique to observe cosmic rays. In this technique, the existence of clouds significantly affects the quality of data. Therefore, cloud monitoring provides important information. We are developing two new methods for evaluating night sky weather with pictures taken ... More
Presented by Takayuki TOMIDA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 114
The Large High Altitude Air Shower Observatory (LHAASO) will be constructed at Mt. Haizishan in Sichuan Province, China. Among several detector components of the LHAASO, the Water Cherenkov Detector Array (WCDA) is of great importance for low-to-middle energy gamma ray physics. Due to the full coverage feature of the WCDA array, the low energy threshold of particles for generating Cherenkov lights ... More
Presented by Hanrong WU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 064
Several multi TeV EAS events monitored by a 4-fold small array of water Chernenko detectors. A square configuration for array of the detectors is used to detect of secondary particles of EAS events and in follow the EAS event. It was logged 476,675 true EAS events by the array in a period of 9 months. With the calculation of the local coordinates ($ heta,phi$) of the logged events, it is extracted ... More
Presented by Mehdi KHAKIAN GHOMI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 065
Anisotropy in the azimuth distribution of EAS events and East-West asymmetry is one of the problems of the EAS arrays. For a more accurate study it is needed a rich data which is very expensive in the EAS experiments. In this way it will be very fruitful to use CORSIKA code. But before any investigation it should be verified by a real experiment. Space accuracy of the recorded secondary particle i ... More
Presented by Mehdi KHAKIAN GHOMI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 018
With the aim to describe the longitudinal development of Cherenkov dominated showers we investigate the energy deposit and the number of charged particles in air showers induced by energetic cosmic rays. Based on the Monte Carlo simulations, discrepancies between different estimates of calorimetric energies are documented. We focus on the energy deposit profiles of air showers deducible from the f ... More
Presented by Vladimir NOVOTNY on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 181
The spectrum and morphology of the diffuse Galactic γ-ray emission carries valuable information on cosmic ray (CR) propagation. Recent results obtained by analizing Fermi-LAT data accumulated over seven years of observation show a substantial vari- ation of the CR spectrum as a function of the distance from the Galactic Center. The spatial distribution of the CR density in the outer Galaxy appear ... More
Presented by Sarah RECCHIA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 008
Hadronic interaction relevant to the air shower development is extensively studied at the Large Hadron Collider up to the cosmic-ray equivalent energy of 10^17eV. To extend the knowledge beyond this energy, or even below, collision energy dependence of the hadronic interaction is crucial. The Relativistic Heavy Ion Collider forward (RHICf) experiment will measure forward particles at the RHIC with ... More
Presented by Takashi SAKO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 108
The Wide Field of View Cherenkov Telescope Array (WFCTA), a main component of the Large High Altitude Air Shower Observatory (LHAASO), covers more than 2.5 orders of primary cosmic rays in each observation mode, which requires the dynamic range of the photoelectric device from 10 p.e. to 32000 p.e. The silicon photomultiplier (SiPM) is a new kind of photoelectric device developing rapidly in recen ... More
Presented by Zhen CAO, Shoushan ZHANG, Baiyang BI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 096
EUSO-SPB (Extreme Universe Space Observatory - Super Pressure Balloon) is the first path-finder mission of the JEM-EUSO program aiming at detecting the fluorescence light emitted by Extensive Air Shower produced by cosmic ray particles in the atmosphere. EUSO-SPB will fly in Spring 2017 from the Wanaka base in New Zealand on board a NASA Super Pressure Balloon with the possibility of reaching up t ... More
Presented by Francesco FENU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 190
Middle aged pulsars are considered a plausible source of e+ observed in cosmic rays. The MAGIC high-energy pulsed gamma-ray flux observations from a young pulsar such as Crab and expected gravitational wave emission from pulsars and/or from circumpulsar precessing disks should compose a scenario resulting compatible with this hypothesis. The recent detection of gravitational waves by the LIGO expe ... More
Presented by Catia GRIMANI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 074
JEM-EUSO (Extreme Universe Observatory onboard Japanese Experiment Module) is a next-generation space-based UHECR observation project. The scientific objectives of the mission stem from enhanced capability of detecting extensive air shower events by fluorescence technique from Space. Accurate measurements of energy spectrum and arrival direction distributions of UHECRs require the determination of ... More
Presented by Kenji SHINOZAKI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 125
The SiPM-based camera technology is designed and developed for the Wide Field of View Cherenkov Telescope Array (WFCTA) of the Large High Altitude Air Shower Observatory (LHAASO) in the paper. WFCTA consists of 18 Cherenkov telescopes. Each Cherenkov telescope consists of an array of 32×32 SiPM array which cover a field of view 14°×16°with a pixel size of 0.5 °. The main scientific goal of WF ... More
Presented by Shoushan ZHANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 011
A proposed new method for measuring the cherenkov light from extensive air showers (EAS) of cosmic rays (CR), which allows to determine not only the primary particle energy and angle of arrival, but also the parameters of the shower in the atmosphere - the maximum depth and "age". For measurements it is proposed to use Cherenkov light produced by EAS in a ground network of wide-angle telescopes wh ... More
Presented by Lev TIMOFEEV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 147
Our galaxy is filled with cosmic-ray particles and more than 98% of them are atomic nuclei. In order to clarify their origin and acceleration mechanism, chemical composition measurements of these cosmic rays with wide energy coverage play an important role. Imaging Atmospheric Cherenkov Telescope (IACT) arrays are designed to detect cosmic gamma-rays in the very-high-energy regime (~TeV). Recently ... More
Presented by Michiko OHISHI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 188
In recent years we witnessed several experiments measuring a large set of observables related to Cosmic-ray physics with an unprecedented level of precision. In order to be able to fully exploit this great amount of new data we must act to refine our theoretical predictions. This can be achieved by building more realistic models of Cosmic-ray Galactic transport. The DRAGON project has been pursued ... More
Presented by Arianna LIGORINI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 094
The TurLab facility is a laboratory, equipped with a 5 m diameter and 1 m depth rotating tank, located in the Physics Department of the University of Turin. In the past few years the TurLab facility has been used to perform experiments related to the observation of Extreme Energy Cosmic Rays from space using the fluorescence technique, as in the case of the JEM-EUSO mission, where the diffuse nigh ... More
Presented by Gregorio SUINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 093
The Mini-EUSO instrument is a UV telescope to be placed onboard the International Space Station, serving as a pathfinder for the study of Extreme Energy Cosmic Rays from space by the JEM-EUSO collaboration. Mini-EUSO will map the earth in the UV range (300 - 400 nm) with a spatial resolution of 5km and a temporal resolution of 2.5 mus. Besides Cosmic Rays, Mini-EUSO offers the opportunity to study ... More
Presented by Gregorio SUINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 040
A large subset of EAS radio observations by CODALEMA experiment in Nançay was used to measure the departure from a plane of the signal arrival times to the antennas. The study was done at two different scales in terms of range to the EAS axis. Below about 300m, by using a 10 antennas array triggered by neighbouring surface detectors, the average departure was found to be negligible (i.e. lower th ... More
Presented by Alain LECACHEUX on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 048
A three-fold antenna system has been installed nearby the center of the CODALEMA particle detector. Its goal is to measure the complete electric field produced by air showers, i.e. along the 3 polarizations EW, NS and vertical. Indeed on all currently operating radio detection arrays, only the horizontal NS and EW polarizations or their projections are measured. This allows the vertical electric f ... More
Presented by Richard DALLIER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 168
The chemical composition of ultra-high-energy cosmic rays (UHECRs) affects the observable distribution of air-shower Xmax values, the atmospheric slant depth at which the number of secondary shower particles reaches its maximum. The observed Xmax distributions at various primary UHECR energies can be compared with the distributions predicted by detailed detector simulations for any assumed composi ... More
Presented by Douglas BERGMAN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 046
The composition of ultra-high energy cosmic rays is still poorly known and this is an very important topic in the field of high-energy astrophysics. We detect them through the extensive air showers they create after interacting with the atmosphere constituents. The secondary electrons and positrons of the showers emit an electric field in the kHz-GHz range. It is possible to use this radio signal ... More
Presented by Benoît REVENU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 047
Hosted by the Nançay Radio Observatory, the CODALEMA experiment is dedicated to radio detection of cosmic ray induced extensive air showers. It is composed of: • 57 self-triggering radio detection stations working in the 20-250 MHz band and spread over 1 km2; • an array of 13 scintillators as particle detector; • a compact array made of 10 cabled antennas, triggered by the particle detecto ... More
Presented by Benoît REVENU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 036
The paper considers two independent methods of primary particles determination of cosmic origin. The particles give a rise to nuclear processes that generate cascade multiplication of various types of elementary particles. Methods are based on Cherenkov light registration at optical range of wavelength, formed by the interaction of secondary particles with the atmosphere and transition of charged ... More
Presented by Igor PETROV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 037
A method for observing the state of the atmosphere during optical observations of Vavilov-Cherenkov radiation in the region of the Yakutsk complex array is described. Classification of weather conditions during patrol observations of the atmosphere (autumn-winter-spring) is given, using cosmic rays with energies (1-10) PeV. Empirical results are compared with calculations for different grades of v ... More
Presented by Igor PETROV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 005
A description of the technique and results of the search for showers produced by neutral particles, such as high-energy gamma rays and astroneutrino, is presented. In order to do that, a comprehensive analysis of the data of electrons, muons and Cherenkov light of EAS and their time responses in scintillation and Cherenkov detectors was carried out. The upper limit of the flux of gamma quants at e ... More
Presented by Igor PETROV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 006
A comparison is made of the calculation of the spatial distribution of Cherenkov radiation from the primary proton performed with allowance for aerosol attenuation, with experimental data measured under different weather conditions at the Yakutsk EAS installation. It is shown that the transparency of the atmosphere affects the shape of the radial distribution of Cherenkov photons. With visibility ... More
Presented by Igor PETROV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 110
The LOFAR Radboud Air Shower Array (LORA) consists of 20 plastic scintillators and is situated at the core of the LOFAR radio telescope. LORA detects particles from extensive air showers and triggers the read-out of the LOFAR antennas. The dense LOFAR antenna spacing allows for detailed sampling of the radio emission generated in extensive air showers, which yields high precision reconstruction of ... More
Presented by Katharine MULREY on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 152
We report on a cosmic ray energy spectrum measurement by the Telescope Array Low-Energy extension (TALE) air fluorescence detector {FD). This spectrum exhibits two features, the second knee in the lower part of the 10^17 eV decade, and a hardening in the lower part of the 10^16 eV decade. The energies of these features, for the first time, are tied to the energy scale of fluorescence detectors of ... More
Presented by Tareq ABUZAYYAD on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 010
For measurements Cherenkov light produced by EAS is proposed to use a ground network of wide-angle telescopes which are separated from each other by a distance 100-300 m depending on the total number of telescopes operating in the coincidence signals, acting autonomously, or includes a detector of the charged components, radio waves, etc. as part of EAS. In a results such array could developed, en ... More
Presented by Lev TIMOFEEV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 136
KLYPVE-EUSO is a recent modification of the mirror-type UHECR space observatory for the Russian Segment of the ISS proposed by SINP MSU in 2010, which was developed by the JEM-EUSO collaboration. A Schmidt type optical scheme was adopted in 2016 as a baseline solution, doubling the exposure of the detector. The focal surface (slightly convex), uses the same Hamamatsu M64 PMTs already used in EUSO- ... More
Presented by Pavel KLIMOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 141
Mini-EUSO is a UV telescope which is developed by the JEM-EUSO collaboration to be placed on board the ISS to carry out measurements of UV atmosphere airglow and transient luminous events in a wide field of view (~40 degrees) and high temporal resolution (2.5 us). Mini-EUSO is developed to be a space qualified pathfinder of future JEM-EUSO missions. Optical system of the detector consists of two F ... More
Presented by Pavel KLIMOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 095
Mini-EUSO will observe Earth night side atmosphere from ISS in the UV spectrum/light. The observed light consists mainly of light produced by airglow. We investigate the feasibility to observe airglow dynamics by Mini-EUSO detector. The investigation focuses on observability of two effects. Firstly on possibility to detect patterns created by atmospheric gravity waves induced by tsunami waves. Sec ... More
Presented by Pavol BOBIK on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 083
We will report setup and calibration of the instruments of sFLASH. The sFLASH experiment is a measurement air fluorescence from ~10^18 eV artificial air showers of an electron beam provided from End Station A of the Stanford Linear Accelerator Center (SLAC) with measurement instruments; a set of Photomultiplier tubes (PMTs) to detect fluorescence photons and Integrating Charge Transformer (ICT) to ... More
Presented by Bokkyun SHIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 070
The International Cosmic Day (ICD) brings together different astroparticle-physics outreach projects from all over the world. Groups of scientists, teachers, and students meet for one day to learn about cosmic rays and perform an experiment with atmospheric muons. All participating groups investigate the same question. The students are enabled to work together like in an international collaboratio ... More
Presented by Timo KARG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 099
The cosmic ray knee is generally understood as marking the limiting energy of galactic accelerators and/or the onset of increasing outflow of particles from the galaxy. Detailed measurements of the cosmic ray composition are needed to support this prediction. The model and detector systematics of these measurements can be reduced with shower-by-shower based measurements employing independent detec ... More
Presented by Jan AUFFENBERG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 069
EAS thermal neutrons measurement gives additional valuable advantages to study energy and mass composition of primary cosmic rays especially above the knee region. After success of the PRISMA-YBJ experiment we built a new EAS thermal neutron detection array at Tibet University, Lhasa, China (3700m a.s.l.) in March, 2017. This prototype array consists of 16 EAS en-detectors measuring two main EAS c ... More
Presented by Shaohui FENG, Xinhua MA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 067
The LOw Frequency ARay (LOFAR) observatory is a multipurpose radio antenna array aimed to detect radio signals in the frequency range 10-240 MHz. Radio antennas are clustered into over 50 stations, and are spread along central and northern Europe, with a higher density in the northern Netherlands. The LOFAR core, where the density of stations is highest, has been used since 2011 for detecting radi ... More
Presented by Antonio BONARDI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 004
A fast registration system for a neutron monitor (NM) is developed in PGI. It records to a file time of neutron coming into NM with accuracy 1 mcs. The number of NM tube is fixed too. So the output data consist of exact time and generation place each of billion pulses of NM. The system is set on a row of NMs (Spitsbergen, Apatity, Moscow and Northern Caucasus). It is used in studying of multiplici ... More
Presented by Yury BALABIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 003
Variations of gamma-rays (20 keV – 5 MeV) coming from the atmosphere to the surface level are studied in PGI since 2009 on the station: Barentsburg (arch. Spitsbergen, 78 N), Apatity (Polar cycle, foothills of the Khibiny mountains, 67 N), Rostov-on-Don (plain, 47 N). Detectors are shielded by lead from environment and opened to top. There are two variation kinds: annual and sporadic. The annual ... More
Presented by Yury BALABIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 145
The broad-band X-ray observations of the youngest known galactic supernova remnant, G1.9+0.3, provide unique information about the particle acceleration at the early stages of evolution of supernova remnants. Based on the publicly available X-ray data obtained with the Chandra and NuSTAR satellites over two decades in energy, we derived the energy distribution of relativistic electrons under the a ... More
Presented by Ruizhi YANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 090
The IceCube Neutrino Observatory at the South Pole has also been probing the high energy cosmic ray sky by investigating the muonic and electromagnetic component of air showers measured with IceTop and the in-ice detector. However, more detailed measurements are needed to understand the astrophysics of the high-energy cosmic-ray sky. This, along with the need to mitigate the impact of snow accumul ... More
Presented by Samridha KUNWAR on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 173
Coherent radio signals in the MHz range are emitted from extensive air showers initiated by high-energy cosmic rays. Observing this emission enables precise measurement of the energy of the primary particle. Compared with those made with the well-established fluorescence technique, radio measurements are less dependent on atmospheric conditions, and thus offer the potential of energy determination ... More
Presented by Raphael KRAUSE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 183
Different type of mechanisms are involved in generation and propagation of radio signals from cosmic ray air showers. The geomagnetic origin is one of such procedures which is very important especially in low frequency band radio studies. Based on CORSIKA and CoREAS code we investigate the influence of the Earth magnetic field parameter on filtered peak radio amplitude patterns in 32–64 MHz freq ... More
Presented by Mohammad SABOUHI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 182
It is possible to determine key parameters of a cosmic ray air shower from different approaches. One of the most important elements of an air shower is the place where the shower axis hits the ground, the shower core. Determining the position of this component can result in calculating other important characteristics including the propagation direction. In this study and based on CORSIKA and COREA ... More
Presented by Mohammad SABOUHI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 169
The TUS experiment is designed to investigate the ultra high energy cosmic ray (UHECR) at energy ~ 100 EeV from the space orbit by the UV radiation measurement of extensive air showers (EAS). It was launched on board the “Lomonosov” satellite from the Vostochny Cosmodrome on April 28, 2016 for 5 years of data taking. It is the first orbital telescope aimed for such measurements. The main mode ... More
Presented by Leonid TKACHEV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 184
Supernovae occurring in dense winds are promising candidates for particle acceleration to high energies. We focus here on the onset of particle acceleration, during the first couple of days following core-collapse. We show that a collisionless shock rapidly forms at supernova shock breakout. We calculate, for the first time, the maximum CR energy that can be reached with Bell's non-resonant hybrid ... More
Presented by Gwenael GIACINTI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 120
The Tunka Radio Extension (Tunka-Rex) is an array of 63 antennas located in the Tunka Valley, Siberia. It detects radio pulses in the 30-80 MHz band produced during the air-shower development. As shown by Tunka-Rex, a sparse radio array with about 200 m spacing is able to reconstruct the energy and the depth of the shower maximum with satisfactory precision using simple methods based on parameters ... More
Presented by Dmitriy KOSTUNIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 150
The H.E.S.S. experiment has shown its capabilities to measure the cosmic ray electron spectrum up to the TeV regime in the past and to unveil spectral features like the break at ~1 TeV. Besides the electron spectrum itself, also the anisotropy in the electron's arrival directions is of high interest, since it could offer the unique possibility to distinguish between the scenario of local electron ... More
Presented by Manuel KRAUS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 167
We present a method of identifying bright sources of ultra-high energy cosmic rays (UHECRs) embedded in a diffuse background flux by studying UHECR arrival directions. The technique is applicable to sources that produce several observed events, which exhibit energy ordering in their arrival directions due to coherent deflections caused by the regular component of the Galactic magnetic field. We qu ... More
Presented by Foteini OIKONOMOU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 170
The Telescope Array experiment (TA) is the largest cosmic-ray detector in the northern hemisphere and consists of a surface detector (SD) array, plus three fluorescence detector (FD) stations overlooking the SD. The large field-of-view of a FD allows for reconstruction of the air-shower development in the atmosphere by imaging ultra-violet fluorescence light from atmospheric nitrogen excited by UH ... More
Presented by Toshihiro FUJII on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 042
Ground arrays for ultra-high energy cosmic ray detection based on water-Cherenkov stations or scintillator modules are unavoidably limited by the saturation suffered by the counters closest to the shower axis. Reducing to a negligible level the amount of events with saturated detectors is mandatory to unambiguously record the highest energy events and to decrease the systematic uncertainties affec ... More
Presented by Antonella CASTELLINA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 033
The extensive air showers created by highly energetic cosmic rays are measured at the Pierre Auger Observatory. The development of these air showers in the dynamic medium of the Earth's atmosphere affects the reconstruction and ultimately the determination of the energy for the primary particle. We present an analysis using data from the two surface detector arrays (with 750m and 1500m spacing) wh ... More
Presented by Alan COLEMAN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 134
The Auger Muon and Infill Ground Array (AMIGA) is a muon detector that is currently being built as part of AugerPrime, the upgrade of the Pierre Auger Observatory. It consists of 30 m^2 plastic scintillator counters buried 2.3 m underground and water-Cherenkov detectors at the surface, organized in a periodic 750 m triangular array, and deployed over an area of 23.5 km^2. Two positions of the engi ... More
Presented by Juan Manuel FIGUEIRA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 041
Since 2007 the Telescope Array Project (TA) and Pierre Auger Observatory (Auger) have collected extensive data sets spanning several orders of magnitude of the cosmic-ray spectrum. In both experiments the majority of data is generated from the surface-detector (SD) array as a result of its very high duty cycle. These data are then calibrated for energy with fluorescence-detectors using a hybrid ap ... More
Presented by Sean QUINN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 034
In recent years, there has been rapid advances in the field of radio detection of high-energy cosmic ray induced air showers. Estimating the depth of shower maximum Xmax with improved accuracy is of great interest for the study of primary particle composition. One of the major systematic uncertainties in the Xmax-measurement arises from variations of the refractive index in the atmosphere. The ref ... More
Presented by Pragati MITRA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 007
At LOFAR we measure the radio emission from extensive air showers (EAS) in the frequency band of 30-80 MHz in dual-polarized antennas. Through an accurate antenna calibration we can determine the complete set of four Stokes parameters that uniquely determine the linear and/or circular polarization of the radio signal for an EAS. The observed dependency of the circular polarization on azimuth angle ... More
Presented by Olaf SCHOLTEN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 159
Telescope Array (TA) is the largest cosmic ray detector in the Northern hemisphere, initially designed to study ultra high energy cosmic rays of energies above 10^18 eV. The Telescope Array Low-energy Extension (TALE) extends the sensitivity of TA down to 10^15.8 eV. The original TA consists of three fluorescence detectors, viewing 3 to 30 degrees in elevation each, and overlooking an array of sci ... More
Presented by JiHee KIM on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 116
The High-Altitude Water Cherenkov experiment (HAWC) is a gamma-ray observatory operating in the 1-100 TeV energy range. It is located 4100 meters above sea level, and consists of an array of 300 water Cherenkov detectors. These detectors have photomultiplier tubes to detect secondary particles from extensive air showers (EAS) initiated in the interaction of a primary particle (either a gamma or a ... More
Presented by Tomäs CAPISTRÄN ROJAS, Ibrahim Daniel TORRES AGUILAR on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 089
The High Altitude Water Cherenkov (HAWC) Observatory is used for detecting TeV gamma rays. HAWC is operating at 4,100 meters above level sea on the slope of the Sierra Negra Volcano in the State of Puebla, Mexico, and consists of an array of 300 water Cherenkov detectors (WCDs) covering an area of 22,000 m2. Each WCD is equipped with four photomultiplier tubes (PMTs) to detect Cherenkov emission i ... More
Presented by Eduardo MORENO BARBOSA, Tomás CAPISTRÁN ROJAS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 038
The determination of the mass composition of ultrahigh-energy cosmic rays remains one of the biggest challenges of astroparticle physics. We will show that the paradigm of shower universality can be applied to accurately reconstruct the properties of air showers, which includes information about the primary mass. The reconstruction is based solely on data from the Auger surface detector, which ope ... More
Presented by Ariel BRIDGEMAN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 160
As the particle lateral density distribution of extensive air showers (EAS) is the key quantity for most cosmic-ray ground-based experiments, the lateral distribution function (LDF) of EAS plays an important role in the analysis of the air-shower events, including the reconstruction of air shower size and the lateral shower age, etc., which are closely correlated with the energy resolution and the ... More
Presented by LIUMING ZHAI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 178
The energy spectrum of the cosmic radiation in the range 10**19-2.4x10**21 eV has been recently predicted showing a rich and distinctive staircase profile. In order to check the prediction, the spectra measured by running and past experiments above 10**19 eV are examined. The computed spectrum compares more favourably with the Telescope Array data rather than with the Auger data in the range 10**1 ... More
Presented by Antonio CODINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 117
The scale and scope of the physics studied at the Pierre Auger Observatory continue to offer significant opportunities for original outreach work. Education, outreach and public relations of the Auger Collaboration are coordinated in a separate task whose goals are to encourage and support a wide range of education and outreach efforts that link schools and the public with the Auger scientists and ... More
Presented by Charles TIMMERMANS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 122
As part of the upgrade of the Pierre Auger Observatory, called AugerPrime, scintillator detectors will be mounted on top of all water-Cherenkov detectors (WCDs) of the air shower array. By combining the data from WCDs with those of scintillator surface detectors (SSDs), we can derive information needed to reconstruct the energy and composition of cosmic rays at energies higher than those reached b ... More
Presented by Radomir SMIDA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 027
The Large Hadron Collider forward (LHCf) experiment is designed to measure the particles emitted in very forward region at LHC. Forward particle production in the hadronic interactions is one of the crucial points to understand the development of cosmic-ray air showers. We report the neutron energy spectra measured by the LHCf at LHC √s=13TeV proton-proton collisions in the pseudo-rapidity range ... More
Presented by Mana UENO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 140
We present the opto-mechanical design of a new generation fluorescence telescope for the detection of ultrahigh-energy cosmic rays (UHECRs). The Fluorescence detector Array of Single-pixel Telescopes (FAST) is a proposed low-cost, large-area, next-generation experiment for the detection of UHECRs via the atmospheric fluorescence technique. The telescope is of a simplified Schmidt design, suitable ... More
Presented by Dusan MANDAT on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 020
Large Area Air Shower (LAAS) group has studied cosmic ray phenomena by using compact extensive air shower (EAS) arrays since 1996. In Okayama University of Science, which is a member of LAAS group, the observation of the primary energy spectrum in its energy region above10^16 eV has been carried out with the array and the Linsley's method. We report on the simulation study of the relocation of an ... More
Presented by Atsushi IYONO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 194
The radiographic (tomographic) analyses with atmospheric muons are applied to the inner-structure investigations of various objects, e.g. geophysical substances like volcanic mountains, large-volume rock structure like pyramids, inaccessible cores of the damaged nuclear reactors, and others. Precise evaluations of transmission efficiency for penetrating muons are important for these radiographic m ... More
Presented by Saya YAMAMOTO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 193
Muon radiographic (tomographic)techniques are applied to inspect the dense structures of matter. To investigate transmission properties of muon, we applied analytical methods developed in the cascade shower theory. The cascade functions for muon characterized by bremsstrahlung and positron-electron pair production are proposed instead of usual functions described for electrons. The results derived ... More
Presented by Saya YAMAMOTO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 176
The energy spectrum and mass composition of Ultra-High Energy Cosmic Rays (UHECRs) measured by Telescope Array (TA) will be presented. TA is the largest UHECR observatory in the northern hemisphere, located in the west desert of Utah, USA. It consists of 507 Surface Detectors (SDs) and three fluorescence detectors (FDs) to observe UHECRs by those two types of detectors simultaneously, in so called ... More
Presented by Daisuke IKEDA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 163
IceTop, the surface component of IceCube Neutrino Observatory detects extensive air showers (EAS) initiated by cosmic rays and gamma rays in the energy range of PeV to EeV. The characteristics of shower front, as sampled by IceTop, such as muon content, local fluctuations and shower front curvature, correlate with the mass of the primary particle for a given energy and arrival direction. Using Ice ... More
Presented by Hershal PANDYA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 017
We present Halpha spectroscopic observations and detailed modelling of Balmer filaments in the northeastern rim of Tycho's supernova remnant. Balmer filaments are bright sheets of shocked gas seen edge-on that trace collisionless, non-radiative forward shock which propagates in partially ionized medium. Collisional excitations of unshocked neutral hydrogen and charge-exchange processes between sho ... More
Presented by Sladjana KNEZEVIC on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 129
Tunka-Rex (Tunka Radio Extension) is an antenna array for cosmic-ray detection located in Siberia. Previous studies of cosmic rays with Tunka-Rex have shown high precision in determining the energy of the primary particle and the possibility to reconstruct the depth of the shower maximum. The next step is the reconstruction of the mass composition and the energy spectrum of cosmic rays. One of the ... More
Presented by Oleg FEDOROV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 151
The HAWC (High Altitude Water Cherenkov) gamma ray observatory observes muons with near-horizontal trajectories corresponding to zenith angles greater than 75 degrees. HAWC is located at an altitude of 4100 meters a.s.l. on the extinct volcano, Sierra Negra in Mexico. In this poster, we will summarize the CORSIKA-based simulations used to determine the effective area and sensitivity of HAWC to muo ... More
Presented by Wayne SPRINGER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 177
We present the energy spectrum of ultra-high-energy cosmic rays (UHECRs) observed by the detectors of the Telescope Array experiment. The broken power law to the spectrum contains two break points, a flattening known as the "ankle" or "dip" at E = 10^{18.7} eV, and a steepening at E = 10^{19.8} eV. These spectral features are related to the distribution of cosmic-ray sources, their injection spect ... More
Presented by Eiji KIDO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 084
The Latin American Giant Observatory (LAGO) is an extended astroparticle observatory with the goal of studying Gamma Ray Burst (among other extreme universe phenomena), space weather and atmospheric radiation at ground level. It consists of a network of several Water Cherenkov Detectors (WCD) located at different sites and different latitudes along the American Continent (from Mexico up to the Ant ... More
Presented by Karen Salomé CABALLERO MORA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 075
The EUSO-SPB (Extreme Universe Space Observatory on a Super Pressure Balloon) is a balloon borne UV camera. It is dedicated to the observation of fluorescent light produced by UHECR induced air showers from the stratosphere. EUSO-SPB was lauched on the 24th of April 2017, 22:50 UTC and laster for 12 days 12 hours at a nominal altitude of 33.5 km. The main instrument consists of a two Fresnel lens ... More
Presented by Simon BACHOLLE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 023
The IceCube Neutrino Observatory measures cosmic-ray air showers with both its surface array IceTop and its 1.5-2.5 km deep in-ice array. IceTop measures the charge deposited by electromagnetic particles and low-energy muons. The abundant electromagnetic component determines the primary energy of the cosmic ray, while the low-energy muons, visible at the edge of the shower, add a sensitivity to th ... More
Presented by Tom GAISSER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 119
Photomultiplier Tubes (PMT) is mostly used in air Cherenkov light detection in extensive air shower of cosmic rays. The Cherenkov telescopes work at clear and moonless nights, therefore it is susceptible to the background of stars in the sky. Because Earth’s rotation and revolution, the night-sky background (NSB) would changes a lot at different seasons and even at one night. In this case, we co ... More
Presented by LiQiao YIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 118
LHAASO (Large High Altitude Air Shower Observatory) is a composite cosmic ray observatory consisting of three types of detectors: KM2A, WCDA and WFCTA. One of the main scientific objectives of LHAASO is to accurately measure the cosmic ray spectrum and composition. With hybrid detection of WCDA and WFCTA, one can further study the “Knee” of CRs from 100TeV to 10PeV. The components of original ... More
Presented by LiQiao YIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 175
The Telescope Array (TA) experiment is located in the western desert of Utah, USA, and observes ultra high energy cosmic rays in the northern hemisphere. In the region of highest energies, the shape of cosmic ray energy spectrum may contain information on the source density distribution and chemical composition. In this study, using events observed with Telescope Array surface detector, we search ... More
Presented by Toshiyuki NONAKA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 106
The Water Cherenkov Detector Array (WCDA) is one of the major components of the Large High Altitude Air Shower Observatory (LHAASO). The whole WCDA is subdivided into 3120 detector cells, each has 5x5 m^2 area with an 8 or 9 inch PMT residing in the water at the depth of 4 m. In order to extend the dynamic range of the detector to the energy more than 100 TeV for the cosmic ray spectrum measuremen ... More
Presented by Cheng LIU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 174
After the discovery of the gravitational waves and the observation of neutrinos of cosmic origin, we have entered a new and exciting era where cosmic rays, neutrinos, photons and gravitational waves will be used simultaneously to study the highest energy phenomena in the Universe. Here we present a fully Bayesian approach to the challenge of combining and comparing the wealth of measurements from ... More
Presented by Guillermo TORRALBA ELIPE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 085
Unlike Imaging Atmospheric Cherenkov Telescopes (IACTs), Extensive Air Shower (EAS) arrays can observe cosmic rays with wide fields of view of about 2 sr and with duty cycles of almost 24 hours every day regardless of weather conditions or the moonlight. Some EAS arrays are located at high altitudes to lower their observation thresholds of cosmic rays and successfully observe gamma rays in the ran ... More
Presented by Atsushi SHIOMI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 066
We report on the behaviour of Resistive Plate Chambers (RPC) developed for muon detection in ultra-high energy cosmic ray (UHECR) experiments. RPCs were developed for the MARTA project and were tested on field conditions. These RPCs cover an area of 1.5 x 1.2 m^2 and are instrumented with 64 pickup electrodes providing a segmentation better than 20cm. By shielding the detector units with enough sl ... More
Presented by Ruben CONCEIÇÃO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 091
Four multianode photomultipliers (Elementary Cell unit) are powered by one high voltage generator. HV control system for Photo Detection Module consists of 9 high voltage generators. HV generators are Cockcroft-Walton voltage multipliers with protection system and with 3 level very fast switches for HV at cathodes. Protection systems were made to protect HVPS itself against possible excess of powe ... More
Presented by Zbigniew PLEBANIAK on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 001
We investigate the universality property of air shower development expressed by the relation between the radial scale factor and the longitudinal age parameter. With new CORSIKA simulation results we show that this property allows improved mass composition studies and hadronic interactions models tests within the sole approach in wide primary energy range (from sub-knee up to the cut-off energies) ... More
Presented by Naoya INOUE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 102
The Latin American Giant Observatory (LAGO) is a cosmic ray observatory at regional scale, consisting of a wide network of water Cherenkov detectors (WCDs) located at several sites in ten Latin American countries. One of the main academic objectives of LAGO is to support the development of astroparticle physics in Latin America. The decay time of atmospheric muons can be measured from data collect ... More
Presented by Luis OTINIANO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 025
High-energy atmospheric muons can yield information about the prompt contribution to atmospheric lepton fluxes. Relevant to studying the flux of astrophysical neutrinos, this also complements results from collider experiments in the forward region. A machine-learning based selection has been developed, identifying high-energy (E_{mu} ~> 1 TeV) leading muons which dominate the energy losses detecte ... More
Presented by Frederik TENHOLT on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 198
Purpose. When ultra-high-energy cosmic rays (UHECRs) travel through the universe they produce secondary neutrinos as well as photons, electrons and positrons (initiating electromagnetic cascades) in different kinds of interactions. These neutrinos and electromagnetic cascades are detected at Earth as isotropic extragalactic fluxes. The level of these fluxes can be directly predicted for any kind o ... More
Presented by Arjen VAN VLIET on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 053
The total area of silicon in cell phone camera sensors worldwide surpasses that in any experiment to date. Based on semi-conductor technology similar to that found in modern astronomical telescopes and particle detectors, these sensors can detect ionizing radiation in addition photons. The Distributed Electronic Cosmic-ray Observatory (DECO) utilizes the global network of active cell phones in ord ... More
Presented by Matthew MEEHAN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 197
Effects of Lorentz invariance violation (LIV) can be present at energies much lower than the quantum gravity scale. Here the possible LIV effects in ultra-high energy cosmic rays (UHECRs) have been investigated. To this aim, modifications of the propagation of UHECR protons and nuclei in the extragalactic space due to LIV effects have been taken into account. For the first time a fit of both flux ... More
Presented by Denise BONCIOLI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 026
The KASCADE-Grande observatory was a ground-based air shower array devoted to the study of the energy and composition of cosmic rays with energies from 1 PeV to 1 EeV. The experiment consisted of different detector systems which allowed the simultaneous measurement of distinct components of the air showers (EAS), such as the muon content. In this contribution, we study the total muon number and th ... More
Presented by Juan Carlos ARTEAGA-VELÁZQUEZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 078
EUSO-TA is an on-ground telescope, located at the Telescope Array (TA) site in Black Rock Mesa, Utah, USA. The main aim of the instrument is the observation of Ultra-High Energy Cosmic Rays through detection of ultraviolet light generated by cosmic-ray air showers. EUSO-TA consists of two, 1 m2 Fresnel lenses with a field of view of about 11x11 degrees. Light is focused on the Photo Detector Modul ... More
Presented by Lech PIOTROWSKI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 077
Mini-EUSO is a telescope that will observe ultra-violet night-time light emission of Earth. It will watch the atmosphere through a UV transparent window of the International Space Station. The main data stream is composed of regularily sampled exposures integrated on three different time scales: microseconds, miliseconds and seconds. These data, together with visible and near infra red images will ... More
Presented by Lech PIOTROWSKI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 187
Interactions of ultra-high-energy cosmic rays with background photons set a limit to the distance cosmic rays reaching us above a certain energy can originate from, making measurements of their fluxes insensitive to properties of sources at high redshifts. On the other hand, the secondary PeV--EeV neutrinos produced in UHECR propagation can reach the Earth even from very high redshifts, and electr ... More
Presented by Armando DI MATTEO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 171
The cosmic ray spectrum at ultra high energies (E > 1 EeV) has two features: the ankle near ~3 EeV and the so-called second break point, at ~60 EeV. If cosmic rays were pure protons at the highest energies, the second break point is explained by the well known Greissen-Zatsepin-Kuz'min process: energy loss of the protons on cosmic microwave background (CMB) due to the photo-pion production. In the ... More
Presented by Dmitri IVANOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 035
The surface detector (SD) of the Pierre Auger Observatory has collected some very peculiar events. The signals produced by these events in the SD stations are very long-lasting compared to those produced by cosmic rays, but the most peculiar characteristic is the footprint of these events on the SD: the stations with a long signal are arranged in a ring with a radius of about 6 km. For some of the ... More
Presented by Roberta COLALILLO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 158
The arrival direction distribution of UHECRs is a key element to understand their sources and composition as well the galactic and extragalactic magnetic fields. The particles that arrive on Earth with energies above $sim 50$ EeV must be originated in sources nearby us as a result of the GZK effect. Furthermore, if these particle are protons and the magnetic fields along their propagations until E ... More
Presented by Rogerio DE ALMEIDA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 052
In order to obtain the primary proton, helium and iron spectra and their ``knee" positions with energy up to 10^16 eV, each of PMTs equipped to the water-Cherenkov muon-detector array (MD) cell of Tibet ASγ experiment is required to measure the number of photons capable of covering a wide dynamic range of 100 – 10^6 PEs according to Monte Carlo simulations. However, the dynamic range of each MD ... More
Presented by Ying ZHANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 039
The origin of ultra high energy cosmic rays (UHECR) is a long-standing mystery. The aim of the Telescope Array (TA) experiment is to reveal this by observing the spectrum, anisotropy, and composition by utilizing an array of surface detectors (SD) and fluorescence detectors. One of the uncertainties in UHECR observation derives from the hadronic interaction model used for air shower Monte Carlo (M ... More
Presented by Ryuji TAKEISHI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 132
Mini-EUSO/UV-Atmosphera is a high-sensitivity, Ultraviolet (UV) detector to study and map UV emissions from the Earth and its atmosphere. The telescope will observe Earth in the nadir direction from the inside of the International Space Station. Mini-EUSO has the same multi-anode photomultiplier focal surface as the one used in the other EUSO detectors and an optics of two, 25 cm diameter Fresnel ... More
Presented by Marco CASOLINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 131
KLYPVE-EUSO aims to place a UHECR (Ultra-High-Energy Cosmic Ray) observatory on board the International Space Station (ISS). The mission is led by Russian Space Agency with the detector being developed in the framework of the JEM-EUSO collaboration. The current design is based on a Schmidt optics and a Multi-Anode-Photomultiplier focal surface which increases about ten times the field of view of t ... More
Presented by Marco CASOLINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 073
Mini-EUSO is a science mission to observe UV background of the night Earth atmosphere from a UV transparent porthole of the International Space Station for future ultra-high energy cosmic ray missions such as KLYPVE-EUSO (K-EUSO) and JEM-EUSO. The Mini-EUSO optical design has two 250 mm double-sided Fresnel lenses and a flat focal surface. The overall length of the optical system is 300 mm. Its fi ... More
Presented by Yoshiyuki TAKIZAWA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 104
Wide Field CherenKov Telescope Array(WFCTA) of LHAASO, consisting of 12 telescopes, has been proposed to mounted at Daocheng County, Sichuan Province, China, to probe the cosmic rays with the energy of 3*10^13eV-10^17eV together with WCDA and KM2A of LHAASO. 4 laser lidars and 2 WFCTA prototypes will be build to calibrate the WFCTA. Considering the Rayleigh scattering and propagation together with ... More
Presented by Fengrong ZHU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 103
Wide Field CherenKov Telescope Array(WFCTA) of LHAASO, consisting of 12 telescopes, has been proposed to mounted at Daocheng County, Sichuan Province, China, to probe the cosmic rays with the energy of 3*10^13eV-10^17eV together with WCDA and KM2A of LHAASO. 2 YAG lasers, 2 N2 lasers and 2 WFCTA prototypes will be build to calibrate the WFCTA. One YAG laser will be placed at a site far away from t ... More
Presented by Fengrong ZHU on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 124
We are testing a plastic detector prototype to observe cosmic rays of GeV level. The energy deposit in the detector is important to know the composition of the particles which reach on the ground. We use compton scattering of RI to calculate the energy deposit of thin plastic scintillators. The experimental values are compared with Geant4 simulation results. Polystyrene based scintilltor of 1cm th ... More
Presented by Wooram CHO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 165
The Auger Engineering Radio Array (AERA) is located at the Pierre Auger Observatory in Mendoza, Argentina. More than 150 autonomous antenna stations, spread over 17 km^2, are used to measure the radio emission from extensive air showers initiated by cosmic rays with energies above 0.1 EeV in the frequency range of 30 – 80 MHz. AERA is operated in coincidence with the other detectors of the Obser ... More
Presented by Ewa Marlen HOLT on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 068
The knowledge of both the long-term characteristics of the atmosphere and of its immediate state is of vital importance for the study of extensive air showers. The F/Photometric Robotic Atmospheric Monitor (FRAM), installed at the Pierre Auger Observatory, is an autonomously operating instrument which measures the integral light extinction in a given direction using stellar photometry. Its primary ... More
Presented by Jiri BLAZEK on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 123
Ultra high energy cosmic rays over 10 ^ 19 eV are thought to come from very powerful objects such as Active Galatic Nucleus(AGN). However, the number of AGNs and ultra high energy cosmic rays is not large enough to experimentally declare the correlation between them. We use Watson and Mortlock’s bayesian statistical method to compare the arrival direction data of large ground arrays such as the ... More
Presented by Wooram CHO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 180
Every astrophysical environment where UHECR nuclei are accelerated and interact with the dense photon fields of the environment will also produce neutrinos. This depends on several aspects of the modelling of the related photo-nuclear physics in the energy range of the Giant Dipole Resonance and the Quasi Deuteron processes, and also in a regime where the production of pion occurs, which eventuall ... More
Presented by Anatoli FEDYNITCH on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 172
At higher energies the uncertainty in the estimated cosmic ray mass composition, extracted from the observed distributions of the depth of shower maximum Xmax, is dominated by uncertainties in the hadronic interaction models. Thus, the estimated composition depends strongly on the particular model used for its interpretation. To reduce this model dependency in the interpretation of the mass compos ... More
Presented by Jose BELLIDO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 146
Results of investigations of cascade showers produced by muons in the Cherenkov water calorimeter (CWC) NEVOD with about 2000 cubic meters volume and a dense spatial lattice of quasi-spherical measuring modules (QSMs) are presented. Each QSM includes six PMTs with flat photocathodes directed along rectangular coordinate axes. The three-dimensional distribution of the Cherenkov radiation from the c ... More
Presented by Rostislav KOKOULIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 166
The complex of arrays for studying CR with energy greater than 10^{15} eV is in operation in Tunka Astrophysical Center, located in the Tunka Valley 50 km from Lake Baikal. The complex includes Cherenkov EAS array Tunka-133, radio-extension of Tunka-133 - Tunka-Rex, and a scintillation array for detecting of charged particles (electrons and muons) Tunka-Grande. The last was put into operation at t ... More
Presented by Nikolay BUDNEV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 056
By the end of 2014, a cosmic ray muon telescope consisting of two detectors which has 0.5 m × 0.5 m area scintillator was installed at Antarctic Zhongshan Station. It is locate latitude and longitude coordinates of 69.4°S and 76.4°E, respectively, at sea level. The vertical cutoff rigidity of cosmic ray protons at Zhongshan Station is 0.76 GV. The Zhongshan Station muon telescope data shows tha ... More
Presented by Ji-long ZHANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 155
Primary cosmic ray mass composition above 1 PeV has been measured with PRISMA-YBJ being a prototype of PRISMA array at altitude of 4300 m a.s.l. It realized a novel type of EAS recording method measuring hadronic EAS component over the total array area through thermal neutron detection with a specially developed so-called en-detectors sensitive to electron and thermal neutron EAS components. Prima ... More
Presented by Yuri STENKIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 156
Our study exploits the Constant Intensity Cut principles applied simultaneously to muonic and electromagnetic detectors of cosmic rays. We use the fact that the ordering of events according to their signal sizes induced in different types of surface detectors provides information about the mass composition of primary cosmic-ray beam, with low sensitivity to details of hadronic interactions. Compos ... More
Presented by Jakub VICHA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 016
The radio detection method for cosmic rays relies on coherent emission from electrons and positrons which is beamed in a narrow cone along the shower axis. Currently the only models to reproduce this emission with sufficient accuracy are Monte Carlo based simulations of the particle and radio emission physics, which require large investments of computation time. The work presented here focuses on ... More
Presented by Tim HUEGE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 022
Recent extensive air shower (EAS) observations have brought about the precise energy spectra of extremely high energy cosmic ray (EHECR) that show a sudden drop of cosmic ray flux around 10^{19.7}eV. As for the mechanism of this rapid dropping, there are thesis but no established one. One of the big reason of the difficulty of the interpretation of the energy spectrum comes from the uncertainty in ... More
Presented by Nobuyuki SAKURAI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 115
The High Altitude Water Cherenkov (HAWC) observatory is a ground-based air-shower detector designed to study the TeV gamma and cosmic ray windows. The observatory is composed of a densely packed array of 300 water Cherenkov tanks, 4.5 m deep and 7.3 diameter with 4 photomultipliers (PMT) each, distributed on a 22,000 m2 surface. The instrument registers the number of hit PMT’s as well as the tim ... More
Presented by Aleksei BOGDANOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 009
Large variations in muon flux above 1 GeV observed in GRAPES-3 muon telescope are a result of their acceleration in atmospheric electric fields. To interpret this phenomenon, detailed Monte Carlo simulations were carried out by using CORSIKA package. The effects of applied electric field can be studied with the option ’EFIELD’ available in CORSIKA. However, this option works only for electrons ... More
Presented by HARI HARAN BALAKRISHNAN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 013
The large area (560 m^2 ) GRAPES-3 tracking muon telescope located at Ooty, India has been operating uninterruptedly since 2001. Everyday it records 4 × 10^9 muons of energy > 1 GeV with an angular resolution of ∼ 4^◦ . Atmospheric temperature variation affects the rate of decay of these GeV muons produced by the galactic cosmic rays (GCRs), which in turn modulates the intensity of detected m ... More
Presented by Arun Babu KOLLAMPARAMBIL PAUL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 015
Recently, the energy determination of extensive air showers using radio emission has been shown to be both precise and accurate. In particular, radio detection offers the opportunity for an independent measurement of the absolute energy of cosmic rays, since the radiation energy (the energy radiated in the form of radio signals) can be predicted using first-principle calculations involving no free ... More
Presented by Tim HUEGE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 086
The GRAPES-3 experiment in Ooty, India has been operating a large area (560 m^2) tracking muon telescope since 2000. It consists of 16 identical modules and each one is designed to measure the flux of muons in 13 x 13 directions covering 2.3 sr field of view. The high statistics data has enabled to probe transient space weather events on time scale of minutes. Due to independent nature of operatio ... More
Presented by Pravata Kumar MOHANTY on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 087
The GRAPES-3 experiment is an array of ∼400 plastic scintillator detec- tors with a compact configuration at Ooty in India. An accurate measurement of the gain of each detector is an important requirement for accurate determi- nation of the energy of primary cosmic rays. In the old method used earlier relied on manual placement of muon paddles for determining the signal pro- duced by single muon ... More
Presented by Jhansi Bhavani VUTA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 157
The PICARD code for the numerical solution of the cosmic ray propagation problem is optimized to solve transport problems that incorporate e.g. complexity of full 3D structure of our Galaxy. PICARD is now used to investigate the impact of anisotropic cosmic-ray diffusion on the Galactic cosmic-ray flux distribution. We discuss different magnetic field models for our Galaxy alongside cosmic-ray sou ... More
Presented by Olaf REIMER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 054
The Latin American Giant Observatory (LAGO) is an international experiment with multiple scientific objectives. These objectives include the study of the extreme universe, space weather and atmospheric radiation at ground level. The observatory is composed of several experimental sites, distributed in the American continent, from Argentina to Mexico. The highest LAGO site is located on the Chacalt ... More
Presented by Marko ANDRADE on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 088
In the GRAPES-3 experiment, consisting of an array of ∼400 scintillator detectors, the arrival direction of the shower is determined from the relative arrival times of particles at different detectors. The fixed arrival time of the signal from the detector to the measuring device, referred as time offset, is crucial for an accurate measurement of shower direction. In the older method the time of ... More
Presented by Jhansi Bhavani VUTA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 043
The Pierre Auger Observatory is in the process of upgrading its surface detector array by placing a 4 m^2 scintillator atop each of the existing 1660 water-Cherenkov detectors. The differing responses of the two detectors allow for the disentanglement of the muonic and electromagnetic components of air showers, which ultimately facilitates reconstruction of the mass composition of ultrahigh-energy ... More
Presented by David SCHMIDT on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 100
The space weather program of the LAGO project aims to study the galactic cosmic ray modulation estimated from the measurement of secondary cosmic ray flux in the network of detectors of the project. The experiment consists of several water Cherenkov tanks located at different altitudes, ranging from sea level (Lima) up to 5000 meters above sea level (Chacaltaya), and latitudes, which span most of ... More
Presented by Luis OTINIANO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 101
One importan goal of the High Energy program of the LAGO project is to detect the high energy component of cosmic rays due to Gama Ray Bursts. Therefore, high altitude sites (over 4500 m.a.s.l) are chosen for installation of some detectors. The altitude allows the improvement of the sensitivity of the detectors otherwise reduced due to the strong absorption of extensive air showers initiated by ga ... More
Presented by Luis OTINIANO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 061
We present a novel numerical model for the propagation of ultra-high energy charged particles in the intergalactic medium, assumed to have a cellular structure of coherent magnetic fields. We take into account the diffusion of ultrarelativistic particles under the influence of the extragalactic magnetic fields and their energy losses. The fields are considered to have random orientations of their ... More
Presented by Marcelo Augusto LEIGUI DE OLIVEIRA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 189
We present an update of the model of the Galactic Magnetic Field (GMF) from Jannson&Farrar (2012). For this purpose we explore improved functional forms to model the coherent and random magnetic field in the Galaxy. We determine the parameters of the new fiducial model by matching its predictions for extragalactic rotation measures and the polarized and unpolarized synchrotron emission to data. Mo ... More
Presented by Michael UNGER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 143
LAGO is an extended cosmic ray observatory composed of Water Cherenkov Detectors (WCD) placed throughout Latin America. One of the LAGO goals is to design and build new high-performance, low cost Data Acquisition System (DAS) for particle detectors. In this work we present the first steps in the development of a DAS for WCD detectors. The DAS system consists of two fast acquisition channels, sever ... More
Presented by Felipe NAVARRO, Dennis CAZAR RAMIREZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 142
This paper describes the installation, calibration and operation of a Water Cherenkov Detector (WCD) at Escuela Politécnica Nacional in Quito–Ecuador at 2810 m.a.s.l. and latitude 0°12’44.007” S. The project was developed as part of the Latin American Giant Observatory (LAGO) Collaboration. The instrumentation consists of a polyethylene tank, a 5” PMT (EMI 9530A) and the electronic acqui ... More
Presented by NICOLAS VASQUEZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 024
It is well known that the Heitler model and its extensions (like the Heitler-Matthews model) describe qualitatively many fundamental properties of extensive air showers initiated in the atmosphere by the high-energy cosmic rays. Typically only the secondary particle multiplicity and the fraction of neutral to charged pions are considered as analytically treatable parameters of hadronic interaction ... More
Presented by Ralph ENGEL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 161
We report the results of the search for ∼ (10−300) PeV primary cosmic-ray photons with the data of the Moscow State University (MSU) Extensive Air Shower (EAS) array. The muon content of the showers recorded by the underground part of the array was used as the hadron/photon discriminating observable. The full-scale reanalysis of the data with modern simulations of the installation does not con ... More
Presented by Mikhail KUZNETSOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 012
One of main sources of the Earth's atmosphere ionization is the cosmic rays, galactic (GCR) and solar (SCR). Primary cosmic rays, consisting mainly of protons, ionize the upper layers of the atmosphere, and also interact with the nuclei of the surrounding matter (mainly nitrogen and oxygen), giving a secondary cosmic ray cascades, which in turn also participate in the ionization of the entire lowe ... More
Presented by Yury BALABIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 019
The origin of the cosmic ray hadron excess observed in a deep uniform lead X-ray emulsion chamber (XREC) at depths larger than 70 radiation lengths is analyzed. We present preliminary experimental data on the absorption of cosmic ray hadrons in the two-storey XREC with a large air gap exposed at the Tien Shan mountains. The design of the chamber was especially invented to prove the hypothesis on a ... More
Presented by Alexander BORISOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 032
Nuclear emulsion is three dimensional tracking detector which is able to record minimum ionizing particle with micrometric accuracy. We are developing nuclear emulsion for observation of cosmic ray and its analysis techniques. We have been applying nuclear emulsion for cosmic ray muon radiography to measure inner structure of nuclear power plants, volcanoes and so on. Since 2015, we have been obse ... More
Presented by Kunihiro MORISHIMA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 029
We are developing radiography technology using cosmic ray muons. Density length of inside large structures are estimated by attenuation of muon flux. We studied at volcano and nuclear reactors in Japan. In resent day, We have been installed nuclear emulsion detectors in Pyramids at Egypt and investigated them by muon radiography. Radiography imaging resolution are deteriorated by multiple coulomb ... More
Presented by Mitsuaki KUNO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 162
With data collected over the last seven years, the IceCube South Pole Neutrino Observatory has measured both the large- and small-scale anisotropy in the cosmic-ray arrival direction distribution with a high level of significance. In addition to the sidereal anisotropy, we have also measured the solar dipole caused by the orbital motion of the Earth around the Sun. We present the cosmic-ray anisot ... More
Presented by Juan Carlos DÍAZ VÉLEZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 191
In this work, we use Lorentz invariance violation (LIV) introduced as a generic modification to particle dispersion relations to study some consequences of single photon emission, known as vacuum Cherenkov radiation, and photon decay processes in cosmic and gamma rays. These processes are forbidden in a Lorentz invariant theory but allowed under the hypothesis of LIV. We show that the emission rat ... More
Presented by Humberto MARTÍNEZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 055
The secondary flow of particles produced in the atmosphere by galactic and extragalactic primary cosmic rays is affected by the Earth's magnetic field and by atmospheric variables such as pressure and temperature. In this work measurements of the cosmic ray flux obtained with a counting detector are shown. The detector consists of three plastic scintillators coupled to photomultiplier tubes and si ... More
Presented by Mario RODRIGUEZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 031
The use of Cosmic-Rays (CR) as a benchmark for new physics (beyond the standard model) search, is an approach based on the fact that, historically, the energy reached by the particle colliders has been and continues to be smaller than the energy the CR can achieve. Nevertheless the energies achieved by the particle colliders nowadays is getting closer to those the CR of the highest energies have, ... More
Presented by Cederik DE LEÓN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 060
CHARM, Cosmic High Altitude Radiation Monitor, is an observatory whose target is the study of cosmic rays. This is actually under construction stage and it consists in a Water Cherenkov Detectors (WCD) array located in Puebla México, at 18.591N and 97.1876W, it is 4300 meters over sea level. Each WCD container is covered inside with a high UV reflectivity material called Tyvek (inner walls) and i ... More
Presented by Oscar MARTINEZ, Epifanio PONCE, Eibar HERNANDEZ, Jorge COTZOMI, Ruben CONDE, Humberto SALAZAR on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 030
The computation time used by the Extensive Air Showers (EAS) simulators is a determining variable that needs to be considered when performing studies or generating shower simulated libraries. The thinning method implemented in the EAS simulator codes has been a useful tool when the computational resources were limited, nevertheless at present the computers allows to perform more calculations in a ... More
Presented by Cederik DE LEÓN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 148
The OPERA detector was used to measure the annual modulation of the atmospheric muon flux at the Gran Sasso underground laboratory (3800 m w.e.). We present preliminary results using 5 years of data (2008-2012) showing a flux modulation with a period of 1 year and a relative amplitude of 1.5%. The phase of the maximum intensity and the effective temperature coefficient $alpha_T$, which correlates ... More
Presented by Christop TOENNIS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 130
The TUS space experiment is aimed to study the energy spectrum and arrival direction of Ultra High Energy Cosmic Rays (UHECR) at E ⁓10^20 eV by measuring the fluorescence yield of EAS in the atmosphere. The "Lomonosov" satellite, with TUS, was launched at the April 16, 2016. Satellite now is in orbit and fully operational. The TUS collaboration design and produce a ground-based system of light s ... More
Presented by Andrew DMYTROTSA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 002
The Large Volume Detector (LVD) is a 1000 t liquid scintillator detector located in the Gran Sasso Laboratory (average depth 3600 m w.e.). Its main aim is the search for neutrino bursts from gravitational stellar collapses: its detection capability extends to the whole Galaxy. LVD has been continuously taking data since 1992: the non-observation of neutrino-bursts over such a long-continued exposu ... More
Presented by Carlo Francesco VIGORITO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 195
In this review, I will reflect on the lessons learnt in the past decade with regards UHECR propagation and their secondary signatures. Starting from a consideration of their travel through extragalactic space, consideration will be made about what can be said about their source evolution. Complimentary to this discussion about the propagation of the UHECR primaries, the information conveyed by the ... More
Presented by Sunil GUPTA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 229
Three generations of leptons and quarks correspond to the lepton charges (LC) in the present work. Then, the leptons have the electric charges (EC) and lepton charges (LC). The quarks have the EC, LC and color charges (CC). Three heavy leptons and three heavy quarks are introduced to make the missing third flavor of EC. Then the three new particles which have the electric charges (EC) are proposed ... More
Presented by Jae-Kwang HWANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 228
The Lightest Kaluza-Klein particle (LKP), which appears in the Universal Extra Dimension theory (UED), emits gamma-ray directly or secondarily, when it annihilates. The gamma-ray signal from annihilation of LKP will create prominent structure around the LKP mass, and we expect the structure can be observed by using ongoing and near-future space-based detectors with a few percent energy resolution. ... More
Presented by Masaki MORI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 223
With short lifetime, cosmic-ray electrons with energies above GeV are a unique probe of our local Galactic neighborhood. Cosmic-ray electrons observed around Earth general originate from the secondary of cosmic ray when propagating within the Galactic interstellar medium. Recently, an unexpected feature in their spectrum at a few hundred GeV are measured by several experiments, i.g., ATIC, Fermi, ... More
Presented by BaoSheng GAO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 225
Having no significant radioactive isotopes and high light yield, liquid xenon is a favorite for low background scintillation detection. With ~40cm the Rayleigh scattering length for its scintillation emission at 175nm is limited though, presenting a challenge for position sensitive scintillation detection and signal extraction in large single phase detectors. In a 1984 paper it was shown that intr ... More
Presented by Kai MARTENS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 200
The COSINE-100 experiment is a joint effort between the KIMS-NaI and DM-Ice experiments to test DAMA's claim for WIMP discovery. It consists of ~106 kg of NaI(Tl) crystals immersed in ~2 tonnes of liquid scintillator as an active veto. The physics run of the experiment has begun in September 2016 at the Yangyang Underground Laboratory in South Korea. The background study and the performance of the ... More
Presented by Pushparaj ADHIKARI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 207
The goal of the COSINE-100 experiment is to confirm or refute the controversial observation of a WIMP-Dark-Mattter-like annual modulation by the DAMA/LIBRA experiment. Measurement of neutron flux for dark matter search experiment is extremely important because seasonal modulations of environmental neutrons that interact with the nuclei in the NaI(Tl) target/detector crystal array might mimic WIMP- ... More
Presented by Govinda ADHIKARI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 199
The COSINE experiment aims to reproduce the annual modulation signal observed by DAMA/LIBRA experiment using the same target medium, i.e. NaI(Tl). Cosmic-ray muon intensity varies seasonally and is a potential source of time-dependent backgrounds that may mimic a WIMP dark matter annual modulation signature. We constructed an array of 3-cm thick plastic scintillator panels that surround the crysta ... More
Presented by Hafizh PRIHTIADI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 204
The ISS-based CALET detector which is in operation since October 2015, can play an important role in indirect detection of Dark Matter by measuring the electron+positron cosmic-ray spectrum in the TeV region for the first time directly. With its fine energy resolution (≈ 2%) and high proton rejection ratio (1:〖10〗^5 ), CALET has the potential to search for fine structures in this spectrum. W ... More
Presented by Saptashwa BHATTACHARYYA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 203
We study the process of dark matter capture by the Sun, under the assumption of a Weakly Interacting Massive Particle (WIMP), in the framework of non-relativistic effective field theory. Hypothetically, WIMPs from the galactic halo can scatter against atomic nuclei in the solar interior, settle to thermal equilibrium with the solar core and annihilate to produce an observable flux of neutrinos. Th ... More
Presented by Axel WIDMARK on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 227
Spectra of Cosmic Rays (CRs), and particularly their features, contain a lot of important information about the astro-particle physics and the fundamental physics. Realizing that the 4 PeV knee of CR nuclei and the 1 TeV spectral cutoff of the electron share almost the same Lorentz factor, we propose that CRs experience a threshold interaction with a new particle X abundant in the Galaxy. The inte ... More
Presented by Chao JIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 212
In direct detection of WIMP dark matter particles, scintillation crystals such as NaI(Tl) are commonly used as targets/detectors. Nuclear recoil responses of NaI(Tl) crystal were measured with 2.43 MeV mono-energetic neutrons from D-D fusion. From this measurement,the quenching factor and pulse shape discrimination(PSD) power of the crystal were measured. In scintillation crystals, interactions be ... More
Presented by Hanwool JOO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 217
Dark matter from the Galactic dark matter halo could be gravitationally captured in the Sun after scattering of a nucleon and accumulate in its center. The accumulated dark matter may annihilate into standard model particles and produce energetic neutrinos sequent decays. Neutrinos with energies below a few hundred GeV escape the Sun without any significant absorption and can be searched for at ne ... More
Presented by Seonjin IN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 214
Neutrino telescopes have searched for self-annihilating dark matter in the Galactic halo and placed the most stringent limits on the dark matter self-annihilation cross section $ angle sigma v langle$ for masses above 30 TeV. To date the most stringent limit was obtained by the ANTARES neutrino telescope looking at the Galactic Center region and is closely followed by the limits from the IceCube e ... More
Presented by Juan Antonio AGUILAR SÁNCHEZ on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 224
The DAMPE (DArk Matter Particle Explorer) is a scientic satellite which was successfully launched into a 500 Km sun-synchronous orbit, on December 17th, 2015, from the Jiuquan Satellite Launch Center of China. The major scientific objective of DAMPE mission is indirect searching for dark matter by observing high energy primary cosmic rays, especially positrons/electrons and gamma rays with an ener ... More
Presented by Changqing FENG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 209
The era of precision cosmology has revealed that ~80% of the matter in the universe is dark matter. Two leading candidates, motivated by both particle and astro-physics, are Weakly Interacting Massive Particles (WIMPs) and axions, both of which have distinct gamma-ray signatures. The Fermi Large Area Telescope (Fermi-LAT) Collaboration continues to search for WIMP and axion signatures spanning the ... More
Presented by Regina CAPUTO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 220
Cosmic rays hitting the outer parts of the Sun result in showers of high energy particles. The shower particles propagate through the solar atmosphere and interact further or decay. Among the shower particles are high energy neutrinos, after production these oscillate between flavours and interact with the solar material while propagating out of the Sun to the Earth. This results in a high energy ... More
Presented by Carl NIBLAEUS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 215
We study the ”GeV-excess” of diffuse gamma-rays in the Galactic halo with a template fit based on energy spectra for each possible process of gamma-ray emission. In addition to the ”standard” physical processes for gamma-ray production from π0 decays produced by diffused cosmic rays, inverse Compton scattering and Bremsstrahlung one finds clear evidence for two additional processes: π0 p ... More
Presented by Iris GEBAUER on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 219
Neutrino telescopes have been proposed as efficient tools for indirect dark matter searches, especially using the Sun as source for its good capability to capture dark matter and since we do not expect high-energy neutrinos from it. However, the last statement should be taken with caution because high-energy neutrinos may come from cosmic particle interactions in the atmosphere of the Sun and prod ... More
Presented by Christop TOENNIS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 221
The DArk Matter Particle Explorer (DAMPE) is an orbital experiment which is aiming to search for the evidences of dark matter in space. Since it is launched in December 2015, a large quantity of data has been recorded. In the data analysis process of the DAMPE, to pick out the electromagnetic interaction particles from the hadron background is one of the most important steps on the way towards to ... More
Presented by Zhiyong ZHANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 202
The space experiment of DArk Matter Particle Explorer (DAMPE) developed in China is designed to find the evidence of dark matter particle by observing primary cosmic rays and gamma rays in energy range from 5GeV to 10TeV. And Geant4 is the main simulation engine for DAMPE experiment. So the precision of simulation data demonstrate the reliability of the physics models provided in Geant4 and are he ... More
Presented by Wu LIBO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 201
A satellite-borne, high energy cosmic ray detector, named the DArk Matter Particle Explorer (DAMPE), was launched in the end of 2015. One of the major scientific objectives of the DAMPE mission is observing primary electrons in an energy range from 5 GeV to 10 TeV. In electron research, a specific method was developed to select events in effective angle of the DAMPE detector, and then obtain the a ... More
Presented by Yifeng WEI on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 211
The DArk Matter Particle Explorer (DAMPE) is a space borne experiment which is designed to search for the evidences of dark matter particles by measuring the flux of e^± and gamma rays in a large energy range from 5GeV to 10TeV in space. The BGO Electromagnetic calorimeter (ECAL) is in charge of energy measurement for the DAMPE. The high performance of calorimeter of DAMPE allows measurements wel ... More
Presented by Sicheng WEN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 208
The DArk Matter Particle Explorer (DAMPE) experiment began its on-orbit operations on December 17, 2015. The main goal of DAMPE is the detection of cosmic rays and gammas from the GeV to the TeV energy region to search for dark matter and understanding the origin of the cosmic rays. The BGO Electromagnetic Calorimeter (BGO ECAL) of the DAMPE is a total absorption calorimeter that allows for a prec ... More
Presented by Yunlong ZHANG on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 216
The dynamic of dwarf irregular (dIrr) galaxies is observed to be dominated by dark matter (DM). Recently, the DM density distribution has been studied for 31 dIrrs. Their extended DM halo (Burket type profile) makes these objects good candidates for DM searches. Located in Puebla (Mexico), the High Altitude Water Cherenkov (HAWC) Observatory is an optimal instrument to perform such DM searches, be ... More
Presented by Sergio HERNÁNDEZ CADENA on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 210
Several models predict that dark matter is constituted of Weakly Interacting Massive Particles (WIMPs). These hypothetical particles would be attracted by the gravity of massive astronomical objects such as black holes, stars, and the Earth. WIMPs can loose energy through scattering with matter and become trapped in the gravitational field of mentioned massive objects. Finally, WIMPs would annihil ... More
Presented by Jan LÜNEMANN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 205
It is well known that CMB is a very powerful tool to constraints Dark Matter decays, even if this decay happens in some invisible -so called "dark"- radiation. I would like to show that, in multi-component models, or more generally for non-trivial dark sector decoupled from standard model, CMB can constraints both lifetime and abundance of decaying dark matter into dark radiation (that could be pl ... More
Presented by Vivian POULIN on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 226
Nuclearites that are hypothetical super-heavy exotic particles and may be important components of the dark matter in our Universe. The nuclearites may have a typical velocity of ~220 km/s, whereas interstellar meteoroids will have geocentric velocities larger than 72 km/s corresponding to a sum of escape velocity from the solar system and the velocity of the earth around the Sun. We are studying t ... More
Presented by Fumiyoshi KAJINO on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 213
Many extensions of the Standard Model of particle physics predict a parallel sector of a new U(1) symmetry, giving rise to hidden photons. These hidden photons are candidate particles for cold Dark Matter. They are expected to kinetically mix with regular photons, which leads to a tiny oscillating electric-field component accompanying Dark Matter particles. A conducting surface can convert such Da ... More
Presented by Ralph ENGEL on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 206
In this proceeding we describe the sensitivity of the IceCube Neutrino Observatory to the creation of axions and axion-like particles (ALPs) in a Galactic Core Collapse Supernova (CCSN). Axions are a light dark matter candidate, and their existence is well-motivated as a solution to the strong CP problem. In a supernova, axions behave much like neutrinos, effciently removing energy from the explos ... More
Presented by Robert CROSS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 222
The Ultra High Energy Cosmic Rays (UHECR) origin is still a puzzle. It lies in observation of primary particles with energies up to ~ 10^20 eV. If they are extragalactic (EG) protons with sources distributed uniformly in the Universe, their spectrum must expose steepening, starting at ≈ 3∙10^19 eV due to interaction with microwave photons (GZK-cutoff). The excess of observed events above the c ... More
Presented by Oleksandr SUSHCHOV on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 218
The search for dark matter is a priority goal for neutrino telescopes. These experiments are particularly sensitive to spin-dependent cross-sections for WIMP-nucleon scattering (in the Sun) and WIMP-annihilation cross-sections (in the Galactic Centre). Up to now, these searches have not translated into a discovery, so more sensitive detectors are needed. The KM3NeT collaboration has started the co ... More
Presented by Christop TOENNIS on 18/7/2017 at 6:00
Session: Poster & Coffee
Board #: 172
Current pair conversion event generators (e.g. geant4 and EGS5 physics models) don't sample the five-dimensional differential cross section (5D DCS), but instead a product of 1D DCSs. In addition, most of them use high-energy and/or small angle approximations. Also the electron and positron polar angles are often generated independently so that energy-momentum is not conserved. Few of them can sim ... More
Presented by Denis BERNARD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 152
A significant part of long Gamma-ray Bursts (GRBs) shows delayed hard GeV gamma-ray emission in addition to the dominant emission observed in the keV-MeV energy range. We argue that such emission can appear when the anisotropic explosion of a massive star occurs in a dense stellar cluster. Then, the delayed GeV gamma-rays can be produced when the hyper-relativistic jet encounters the radiation of ... More
Presented by Wlodek BEDNAREK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 091
In the context of the development of the Cherenkov Telescope Array, we have conceived and implemented a multi-objective genetic algorithm (GA) code for the optimisation of an array of Imaging Atmospheric Cherenkov Telescopes (IACTs). The algorithm takes as an input a series of cost functions (metrics) each describing a different objetive of the optimisation (such as effective area, angular resolut ... More
Presented by Ugo GIACCARI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 114
POLAR is a compact wide field space-borne detector dedicated for precise measurements of the linear polarization of hard X-rays emitted by transient sources in the energy range from 50 keV to 500 keV. It consists of 1600 plastic scintillator bars grouped in 25 detector modules that are used as gamma-ray detection material. Its energy range sensitivity is optimized for detection of the prompt emiss ... More
Presented by Hualin XIAO, Wojtek HAJDAS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 079
The LIGO/Virgo collaboration has recently discovered gravitational wave “bursts” emitted from coalescing massive compact objects. It is possible that these events have an electromagnetic counterpart. Gravity-wave detectors have very poor position resolution, making follow-up observations by narrow-field telescopes challenging. The High Altitude Water Cherenkov (HAWC) Observatory is a wide-fiel ... More
Presented by Andrew SMITH on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 151
Eventdisplay is a software package for the analysis and reconstruction of data and Monte Carlo events from ground-based gamma-ray observatories such as VERITAS and CTA. It was originally developed as a display tool for data from the VERITAS prototype telescope, but evolved into a full analysis package with routines for calibration, FADC trace integration, image and stereo parameter analysis, respo ... More
Presented by Gernot MAIER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 254
Searching for new astrophysical sources is an important physical goal of current and nearly further ground-based gamma-ray detectors, such as HAWC, LHAASO and CTA. The gamma ray signal appears as an excess number of events. The significance of the excess is estimated using statistical method and is used to determine whether to accept the signal or not. Up to now, four main statistical methods, inc ... More
Presented by Songzhan CHEN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 129
It is suggested that the extremely fast TeV gamma-ray flare from the radio galaxy IC 310 might originate in the magnetosphere of a supermassive black hole. If such flares are produced also in the surrounding of SMHBs in blazars then VHE gamma-rays have to propagate in the radiation field of the jet before reaching an observer. We investigate the scenario in which VHE gamma rays initiate electromag ... More
Presented by Piotr BANASINSKI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 248
Recently, increasing attention is being payed to the solar gamma-rays, which are mainly produced by the hadronic interactions of cosmic rays with the solar atmosphere. The solar gamma-rays with energy up to 100 GeV have been observed by Fermi. Some theoretical works have been done to estimate the flux of solar gamma-rays, while the measurement result cannot be reproduced. In this work, we will est ... More
Presented by Baosheng GAO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 164
We report the detailed analysis of Fermi Large Area Telescope’s data towards the direction of the young massive star cluster NGC 3603 and Westerlund 2. The emissions show a hard spectrum with a photon index of about -2 from 1 GeV to 250 GeV. The spatial correlation with the ionised gas indicates a hadronic origin. The total cosmic ray (CR) protons energy budgets in both systems are estimated to ... More
Presented by Ruizhi YANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 113
Gamma Ray Bursts (GRBs) are the strongest explosions in the universe commonly associated with creation of black holes. Magnetic field structure and burst dynamics influence polarization of the promptly emitted gamma-rays. Thus, precise detection of the polarization can be an ultimate tool to unveil GRB mechanisms. Dedicated polarization measurement are currently conducted by a new instrument POLAR ... More
Presented by Hualin XIAO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 173
A Large Size air Cherenkov Telescope (LST) prototype, proposed for the Cherenkov Telescope Array, is under construction at the Canarian Island of La Palma (Spain) this year. The LST camera, which comprises of an array of photomultipliers (PMTs), requires a precise and regular calibration over a large dynamic range. We present a system built to provide the optical calibration of the camera consisti ... More
Presented by Michele PALATIELLO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 179
The Cherenkov Telescope Array (CTA) will be the next generation observatory employing different types of Cherenkov telescopes for the detection of particle showers initiated by very high energy gamma-rays. A good knowledge of the Earth's atmosphere, which acts as a calorimeter in the detection technique, will be crucial for calibration in CTA. Variations of the atmosphere's transparency to Cherenk ... More
Presented by Stanislav STEFANIK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 185
The Cherenkov Telescope Array (CTA) is an international initiative to build the next generation of ground-based very-high-energy gamma-ray instruments. Full sky coverage will be assured by two arrays, with one site located in each of the northern and southern hemispheres. Three different sizes of telescopes (large, medium, small) will cover the wide energy range from tens of GeV up to hundreds of ... More
Presented by Maria Concetta MACCARONE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 240
A Sun/Moon photometer CE318-T is part of the auxiliary scientific instrumentation developed for the atmosphere monitoring and calibration of the Cherenkov Telescope Array (CTA). The photometer allows an understanding of the detailed characteristics of the atmospheric extinction and the underlying particulates, mainly aerosols. The photometer can measure daytime and night-time evolution of the inte ... More
Presented by Jakub JURYSEK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 107
IceCube has discovered an unresolved and isotropic flux of neutrinos between 10 TeV and 8 PeV. An extragalactic origin for this flux is usually assumed, as well as a correlation with the sources of cosmic rays. To date, no clear association with a class of objects has been made. HAWC is a very high energy gamma ray observatory in operation in central Mexico. HAWC has studied 2/3 of the sky above a ... More
Presented by Joshua WOOD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 203
Observations of high energy gamma rays are an essential probe of the cosmic-ray acceleration mechanisms because they are created by cosmic rays interacting near their origin. The characteristics of the gamma-ray flux variability and spectra constrain the acceleration mechanisms and the environment of the accelerator. Detection of the highest energy gamma rays and the shortest timescales of variabi ... More
Presented by Miguel MOSTAFA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 253
The gamma-ray binary system PSR B1259-63/LS 2883 consists of a 48 ms pulsar in a highly eccentric ~3.4 yr orbit around a massive companion Be star. The observed TeV light curve features a decrease in flux at periastron which has not been fully explained by emission mechanisms alone. An observed decrease can, however, be explained by gamma-gamma absorption caused by stellar and disk photons. We det ... More
Presented by Iurii SUSHCH on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 156
Galactic diffuse emission has provided us with the evidence for the cosmic ray acceleration throughout the Galaxy and the background for searches of physics beyond the Standard Model. However, only the very limited measurements of diffuse flux are available in TeV gamma rays. The High Altitude Water Cherenkov (HAWC) observatory is well-suited for observing the diffuse emission of high energy with ... More
Presented by Chang Dong RHO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 216
High level of single noise rate is one of the difficult problems of the LHAASO-WCDA, that leads to a stage of an online process of the data with a noise filtering method, which iterates many sky cells for locating the direction of the triggered air shower events. Other than the Central Processing Unit (CPU), the Graphics Processing Unit (GPU) can extensively speed up the data processing while cons ... More
Presented by Dezhi HUANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 229
Among several detector components of the Large High Altitude Air Shower Observatory (LHAASO), the Water Cherenkov Detector Array (WCDA) is of great importantance for gamma ray astronomy from 100 GeV to 30 TeV. High level of single noises persisting in the triggered events imposes a significant problem for the event reconstruction of the experiment. A solution to the problem has to delicately refin ... More
Presented by Xiaojie WANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 246
The Water Cherenkov Detector Array (WCDA), which is one of the main components of the Large High Altitude Air Shower Observatory (LHAASO), functions as surveying the northern sky for high-energy gamma ray sources at the energy range around 100 GeV--30 TeV. Aiming a good observation, the accuracy of the time offsets among detector cells is required to be less than 0.2 ns. Besides the dedicated time ... More
Presented by Minjun CHEN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 227
lettrine[nindent=0em,lines=3]{D}iscovered by Hess during some experiments about air ionization, cosmic rays are constituted by particles coming from the space. In the past, cosmic rays allowed the development of Particle Physics; indeed, thanks to their high energy not achievable in laboratories, they enabled new particles discovery. Today, interest about this radiation concerns both Astrophysics ... More
Presented by Fausto CASABURO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 150
The Cherenkov Telescope Array (CTA) will be the world's largest and by far most sensitive observatory for high-energy gamma rays. It will be capable of detecting gamma rays from extremely faint sources with unprecedented precision on energy and direction in the energy range from 20 GeV to more than 300 TeV. The design optimisation and performance of the future observatory derived from detailed Mon ... More
Presented by Gernot MAIER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 230
The Cherenkov Telescope Array (CTA) is the next generation of Imaging Atmospheric Cherenkov Telescopes. It will reach a sensitivity and energy resolution never obtained until now by any other high energy gamma-ray experiment. Understanding the systematic uncertainties in general will be a crucial issue for the performance of CTA. It is well known that atmospheric conditions contribute particularly ... More
Presented by Georges VASILEIADIS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 188
The SST-1M is a 4-m Davies-Cotton atmospheric Cherenkov telescope optimized to provide gamma-ray sensitivity above a few TeV. A prototype has been deployed and is proposed as part of the Small-Size Telescope array for the Cherenkov Telescope Array (CTA). The SST-1M control software of all subsystems (active mirror control, drive system, safety system, photo detector plane, Digicam, CCDs) and the w ... More
Presented by Roland WALTER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 187
The Cherenkov Telescope Array (CTA) will operate several types of telescopes and cameras. The individual camera trigger rates will vary much - from 0.6 to 15 kHz - while the content of the raw data will be heterogeneous. Raw data streams of up to 43 Gbps per telescope must be handled efficiently, from the camera front-ends down to the on-site repository and real-time analysis. In addition, the sys ... More
Presented by Roland WALTER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 202
The Large High Altitude Air Shower Observatory (LHAASO) is going to be built at an altitude of 4410 meters in Daocheng, Sichuan Province, China. The Water Cherenkov Detector Array (WCDA), one of the major components of the LHAASO project, focuses on surveying the Northern sky for gamma ray sources in a wide energy range (0.1 to 30 TeV). One of the main tasks of the data analysis of the WCDA is to ... More
Presented by Min ZHA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 116
We analyzed Suzaku/XIS data (2006-2015) and Fermi/LAT data (2008-2015) of the gamma-ray emitting radio galaxy NGC 1275 and monitored it with the Kanata optical telescope. A brightening of the nucleus in both the X-ray and GeV gamma-ray energy bands was found in 2013-2015. This is the first evidence of variability with correlation between X-ray and GeV gamma-rays for NGC 1275. We also analyzed Swif ... More
Presented by Yasushi FUKAZAWA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 235
POLAR is a Compton polarimeter with 1600 pixels designed to measure the polarization of Gamma-Ray Bursts (GRBs). POLAR has been launched successfully onboard the Chinese space laboratory Tiangong-2 on 15th September 2016. The anisotropy of Compton scattering is used as the characteristic quantity of polarization degree and angle. The scattering angles are accumulated into a modulation curve and co ... More
Presented by Jiro SHIMODA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 244
In order to search for GRBs above the GeVs energy range, high duty cycle and a wide field of view ground-based experiments in high altitude sites is needed. At present, the Water Cherenkov Detectors (WCD) Prototype using the single particle technique are developed in Tibet University of China) for detecting GRBs. In this paper, prototype development of the WCD is reported.
Presented by Maoyuan LIU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 155
B1957+20 is a millisecond pulsar located in a black widow type compact binary system with a low mass stellar companion. The interaction of the pulsar wind with the companion star wind and/or the interstellar plasma is expected to create plausible conditions for acceleration of electrons and subsequent production of very high energy gamma rays in the inverse Compton process. We performed extensive ... More
Presented by Marcos LÓPEZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 142
The interstellar radiation field (ISRF) of the Milky Way is the result of emission by stars and re-processing of the starlight by dust in the interstellar medium. The ISRF is an essential input to cosmic-ray propagation codes for calculating the energy losses by leptons from inverse Compton scattering, and the resulting interstellar gamma-ray emission. To-date models for the ISRF have used a 2D Ga ... More
Presented by Troy PORTER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 214
The upcoming CTA project is expected to provide unprecedented sensitivity in the low-energy (<~ 100 GeV) range for Cherenkov telescopes. In order to exploit fully the potential of the telescopes the standard analysis methods for gamma/hadron separation might need to be revised. We study the composition of the background by identifying events composed mostly of a single electromagnetic subcascade o ... More
Presented by Julian SITAREK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 176
The Gamma-ray Cherenkov Telescope (GCT) is an innovative dual-mirror solution proposed for the Small-Size-Telescopes of the future Cherenkov Telescope Array (CTA), capable of imaging the showers induced by cosmic gamma-rays with energies from a few TeV up to 300 TeV. The Schwarzschild-Couder design on which the telescope optical design is based makes possible the construction of a fast telescope ( ... More
Presented by Cedric PERENNES on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 080
The High-Altitude Water Cherenkov Observatory is a large field of view (~2sr) observatory sensitive to very-high energy gamma rays (~0.5-100TeV). It is located in central Mexico (19˚N) and has a high duty cycle (~95%). These characteristics allow it to continuously monitor ~2/3 of the sky, looking for transient events, such as flares from Active Galactic Nuclei or possibly other unknown phenomena ... More
Presented by Israel MARTINEZ-CASTELLANOS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 250
The Weibel instability occurs in collisionless plasma with anisotropic temperature and generates magnetic fields, which is thought to be a crucial role for particle acceleration and magnetic field generation in relativistic collisionless shocks. According to observations of afterglows of Gamma-ray Busts (GRB), magnetic fields are strongly amplified to about 100 times the shock-compressed value in ... More
Presented by Sara TOMITA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 140
The positron excess measured by PAMELA and AMS can only be explained if there is one or several sources injecting them. Moreover, at the highest energies, it requires the presence of nearby (~hundreds of parsecs) and middle age (maximum of ~hundred of kyr) source. Pulsars, as factories of electrons and positrons, are one of the proposed candidates to explain the origin of this excess. To calculate ... More
Presented by Ruben LOPEZ-COTO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 134
Pulsar Wind Nebulae (PWNe) or plerions represent the most numerous population of TeV sources in our galaxy. These sources, some of which emit very-high-energy (VHE) gamma-rays, are believed to be related to the young and energetic pulsars that power highly magnetized nebulae (a few uG to a few hundred uG). In this scenario, particles are accelerated to VHE along their expansion into the pulsar sur ... More
Presented by Alba FERNÁNDEZ-BARRAL on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 083
The flat spectrum radio quasar (FSRQ) PKS 1510-089 (z=0.361) is known for its complex multiwavelength behavior. It has been monitored regularly at very high energy (VHE, E>100GeV) gamma-rays with H.E.S.S. since its discovery in 2009 in order to study the unknown behavior of FSRQs in quiescence at VHE, as well as the flux evolution around flaring events. Given the expected strong cooling of electro ... More
Presented by Michael ZACHARIAS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 124
The H.E.S.S. Imaging Air Cherenkov Telescope system is, due to its fast reaction time and its comparably low energy threshold, very well suited to perform follow-up observations of detections at other wavelengths or other messengers like high-energy neutrinos and gravitational waves. These advantages are utilized optimally via a fully automatized system reacting to alerts from various partner obse ... More
Presented by Fabian SCHÜSSLER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 125
The very-high-energy (VHE; E>100 GeV) extragalactic sky is dominated by blazars, a class of active galactic nuclei which show rapid variability at all wavelengths. Target of Opportunity (ToO) observations triggered by flaring activity detected at longer wavelengths are thus an important part of the blazar observing strategy of H.E.S.S., an array of five imaging atmospheric Cherenkov telescopes sen ... More
Presented by Fabian SCHÜSSLER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 161
To investigate the nature and evolution of TeV pulsar wind nebulae, we examine the firmly identified PWNe in the H.E.S.S. Galactic Plane Survey, along with the few other known detections from the literature, as well as the upper limits extracted from the H.E.S.S survey. These data exhibit a correlation of TeV surface brightness with pulsar spin-down power. It appears to be caused by both an increa ... More
Presented by Stefan KLEPSER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 160
In 2015/16, the photomultiplier cameras of the H.E.S.S. Cherenkov telescopes CT1-4 have undergone a major upgrade. The entire electronics has been replaced, using NECTAr chips for the front-end readout. A new ventilation system has been installed and several auxiliary components have been replaced. Besides this, also the internal control and readout software was rewritten in a modern and modular w ... More
Presented by Stefan KLEPSER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 130
Massive black holes in active galaxies are surrounded by bulges of both late-type and young luminous stars in nuclear stellar clusters. The luminous stars can enter a jet region which contains fast moving blobs filled with relativistic electrons. We calculate the gamma-ray spectra produced by such electrons in the Inverse Compton $e^pm$ pair cascade process. Such scenario can explain the appearanc ... More
Presented by Piotr BANASINSKI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 146
Supernova remnants (SNRs) are widely considered to be the origin of Galactic cosmic rays. The SNR Vela Jr. (RX J0852.0-4622) is one of the prime sources for studies of particle acceleration aiming to test this paradigm due to its strong non-thermal emission across the whole electromagnetic spectrum, spanning from radio to very-high-energy (VHE, E>100 GeV) gamma-rays, and to its young age and proxi ... More
Presented by Nukri KOMIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 181
We built a large (approximately 4,000 m**2) water Cherenkov- type muon detector array under the existing Tibet air shower array at 4,300 m above sea level, to observe 10-1000 TeV gamma rays from cosmic-ray accelerators in our Galaxy with wide field of view at very low background level. A gamma-ray induced air shower has significantly less muons compared with a cosmic-ray induced one. Therefore, ... More
Presented by Masato TAKITA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 171
Novel gamma-ray telescope schemes are under development so as to bridge the 0.1-100 MeV sensitivity gap of gamma-ray astronomy (Compton, pair creation), (silicon wafer stacks, emulsions, gas detectors). The lower average density with respect, e.g. to the tungsten/silicon active target of the Fermi-LAT makes square-meter effective area telescopes voluminous objects, for which the photon energy meas ... More
Presented by Denis BERNARD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 228
The Water Cherenkov Detector Array (WCDA), which is one of the main components of the Large High Altitude Air Shower Observatory (LHAASO), functions as surveying the northern sky for high-energy gamma ray sources at the energy range around 100 GeV--30 TeV. The precision of the time measurement for shower particles hitting every detector in the array directly associates the detection sensitivity fo ... More
Presented by Bo GAO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 100
Observations of the HBL object 1RXS J023832.6-311658 were made in 2013, 2015 and 2016 with the High Energy Stereoscopic System (H.E.S.S.). An excess of very high energy (VHE: > 100 GeV) gamma rays is clearly observed. The broad-band spectral energy distribution including the VHE spectrum will be presented. This object shows no evidence for any temporal variation has a hard spectrum at TeV energies ... More
Presented by Florian GATÉ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 105
Photon counts statistics have been shown to provide a sensitive tool for characterizing gamma-ray source populations and the composition of the gamma-ray sky. In this contribution, we extend the use of the standard 1-point probability distribution function (1pPDF) to decompose the high-latitude gamma-ray flux observed with Fermi-LAT into emission from point sources, Galactic foreground, and a diff ... More
Presented by Hannes ZECHLIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 149
The Cherenkov Telescope Array (CTA) will perform a survey of the whole Galactic disk with unprecedented sensitivity at energies up to 300 TeV. One of the key science projects of the CTA consortium is the discovery of Galactic PeVatrons (cosmic ray accelerators to PeV energies). The determination of efficient criteria to identify PeVatron candidates during the Galactic plane survey observations is ... More
Presented by Cyril TRICHARD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 112
GRB160709A is one of the small sample of short Gamma-ray Bursts detected by both the Gamma-ray Burst Monitor and the Large Area Telescope on-board the Fermi Gamma-ray Space Telescope. We performed a detailed spectral analysis of the Fermi gamma-ray data for this GRB. The spectrum is best described by a combination of thermal and non-thermal spectral components. In time-resolved analysis, a combina ... More
Presented by Donggeun TAK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 205
The ability to separate cosmic-ray (CR) particles from gamma rays is important for imaging atmospheric Cherenkov telescopes (IACTs), as it is directly related to the sensitivity of the instrument. The event classification problems in IACT data analysis can be treated with rapidly-advancing machine learning algorithms, which have the potential to outperform the traditional analysis methods using im ... More
Presented by Qi FENG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 218
The Large High Altitude Air Shower Observatory (LHAASO) is under construction at Mt. Haizishan, Daocheng of China. Detection of GRBs is one of the important goals of the Water Cherenkov Detector Array (WCDA) experiment of the observatory. Thanks to the triggerless design of the data acquiring system, multi-purpose parallel trigger algorithms can be implemented with software for various physics goa ... More
Presented by Zhiguo YAO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 126
POLAR is a dedicated Gamma-Ray Burst polarimeter working in the energy range from 50 to 500 keV on-board the Chinese space laboratory Tiangong-2, which was launched on Sep 15, 2016. Since then, POLAR has detected 48 GRBs as of Mar 1, 2017, which is equivalent to about 200 GRBs/year, demonstrating that POLAR is one of the most powerful GRB detectors in operation. In this talk, we will give an overv ... More
Presented by Shaolin XIONG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 127
In this poster, we present how we search for and identify GRBs from POLAR data and how POLAR participates in the coordinated GRB observations in the framework of the GCN alert system. We explain the algorithm and methodology used to search GRBs in the POLAR data, which take into account the features of the POLAR data structure and detector performance. We demonstrate the classification strategy, w ... More
Presented by Shaolin XIONG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 128
POLAR is a dedicated Gamma-Ray Burst polarimeter on-board the Chinese space laboratory Tiangong-2 launched on Sep 15, 2016. In addition to the normal operation mode, a new data acquisition mode (called single-bar mode) has been developed to increase the POLAR sensitivity to burst events (e.g. GRB, SFL). In this new mode, POLAR sensitivity is comparable to that of the Fermi GBM. Given its very wide ... More
Presented by Shaolin XIONG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 201
Fermipy is an open-source python framework that facilitates analysis of data collected by the Fermi Large Area Telescope (LAT). Fermipy is built on the Fermi Science Tools, the publicly available software suite provided by NASA for the LAT mission. Fermipy provides a high-level interface for analyzing LAT data in a simple and reproducible way. The current feature set includes methods for extractin ... More
Presented by Matthew WOOD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 092
The first detection of a gravitational wave event by advanced LIGO in 2015 prompted the search for and study of electromagnetic counterparts to gravitational wave events on a worldwide scale. If an electromagnetic signal is also observed, it would provide additional information that can give us significantly better constraints on the parameters (such as mass, orbit, spin) of the binary system. The ... More
Presented by Masaki MORI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 139
A comparison is made of the time structures of the gamma-ray burst detected from the Crab Nebula by several air shower arrays on February 23, 1989 and of the flare recorded by the AGILE satellite gamma-ray telescope in September 2007. These two events are separated in time by almost twenty years and in energy by six orders of magnitude. Nevertheless, their temporal behavior is similar (three pulse ... More
Presented by Alexander LIDVANSKY on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 135
There are several types of Galactic sources that can potentially accelerate charged particles up to GeV and TeV energies and through various interaction processes like for example inverse compton scattering or hadronic interactions produce Very High Energy (VHE, E>100 GeV) gamma-ray emission. We summarize recent studies based on observations with the MAGIC telescopes of gamma-ray binaries, microqu ... More
Presented by Alba FERNÁNDEZ-BARRAL on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 141
An excess of gamma rays from the Inner Galaxy in the Fermi LAT data has been identified, the GCE. This emission has been interpreted as a possible signature of the annihilation of dark matter particles, or as originating from a collection of unresolved point sources, such as gamma-ray millisecond pulsars. We explore the clustering properties of the diffuse emission arising from a population of gam ... More
Presented by German GOMEZ-VARGAS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 226
MAGIC, a system of two imaging atmospheric Cherenkov telescopes, achieves its best performance under dark conditions, i.e. in absence of moonlight or twilight. Since operating the telescopes only during dark time would severely limit the duty cycle, observations are also performed when the Moon is present in the sky. Here we present a dedicated Moon-adapted analysis and characterize the performanc ... More
Presented by Daniel GUBERMAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 087
The High Altitude Water Cherenkov Observatory (HAWC) has a wide field-of-view (FOV, ~2sr) and a high duty cycle (~95%), which make it a powerful survey and monitoring experiment for sources of TeV gamma rays. We present a systematic survey of gamma-ray sources based on the Fermi 3FHL catalog. Sources are restricted to HAWC's FOV (Declination 19° ± 40°) and to extragalactic sources with redshift ... More
Presented by Sara COUTIÑO DE LEON on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 217
UFFO/Lomonosov was developed to study the early optical photons from Gamma-ray bursts, and launched successfully on April 28, 2016 aboard Lomonosov. UFFO/Lomonosov has total 25 kg of weight and 400 (w) x 950 (L) x 365 (H) mm3 in size. The payload is equipped with two telescope. One is X-ray trigger and imaging telescope, called UFFO Burst Alert and Trigger telescope (UBAT), which is composed of 36 ... More
Presented by Soomin JEONG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 234
POLAR is a Compton polarimeter sensitive in the 50 to 500 keV energy range. The Crab pulsar is an import target for POLAR on board the Chinese space laboratory Tiangong-2. With the its large Field Oof View (FoOV), POLAR detected significant pulsed signals from the Crab pulsar which is visible by POLAR in about half of all observation time. In this poster, we present the preliminary results includi ... More
Presented by Bobing WU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 183
The Gamma-ray Cherenkov Telescope (GCT) is one of the Small Size Telescopes (SSTs) proposed for the Cherenkov Telescope Array (CTA) aimed at the 1 TeV to 300 TeV energy range. GCT will be equipped with a Compact High-Energy Camera (CHEC) containing 2048 pixels of physical size about 6 × 6 mm2, leading to a field of view of over 8 degrees. Electronics based on custom Target ASICs and FPGAs sample ... More
Presented by Harm SCHOORLEMMER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 225
With the development of the Imaging Atmospheric Cherenkov Technique (IACT), Gamma-ray astronomy has become one of the most interesting and productive fields of astrophysics. Current IACT telescope arrays (MAGIC, H.E.S.S, VERITAS) use photomultiplier tubes (PMTs) to detect the optical/near-UV Cherenkov radiation emitted due to the interaction of gamma rays with the atmosphere. For the next generati ... More
Presented by Daniel GUBERMAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 209
The Cherenkov Telescope Array (CTA) is an international project for a next-generation ground-based gamma-ray observatory, aiming to improve on the sensitivity of current-generation experiments by an order of magnitude and provide energy coverage from 20 GeV to more than 300 TeV. The 9.7m Schwarzschild-Couder (SC) candidate medium-size telescope for CTA exploits a novel aplanatic two-mirror optical ... More
Presented by Daniel NIETO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 170
In the framework of the Cherenkov Telescope Array (CTA) observatory, the Italian National Institute for Astrophysics (INAF) is developing an end-to-end prototype proposed for the CTA small-size class of telescopes in dual-mirror (SST-2M) configuration. The prototype, named ASTRI SST-2M, is currently undergoing the scientific and performance validation phase. In a second phase of the project, a min ... More
Presented by L. Angelo ANTONELLI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 178
The LHAASO (Large High Altitude Air Shower Observatory) experiment is currently under construction in the Haizishan (Lakes’ Mountain) site, Sichuan province, PR China, at 4400 m a.s.l. (29,36° N, 100,14° E, 600 g/cm^2 atmospheric depth). Its main physical goals are the study of the high energy spectrum tail for both ϒ-rays (in the 100 GeV - 1 PeV range, opening for the first time the 100 -100 ... More
Presented by Silvia VERNETTO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 174
Presented by Dominik NEISE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 233
The Cherenkov Telescope Array (CTA) will be the next generation of ground-based instruments for Very High Energy gamma-ray astronomy. It will improve the sensitivity of current instruments up to an order of magnitude and provide energy coverage between 20 GeV and 300 TeV. This improvement will be achieved using a total of 19 and 99 telescopes of three different sizes spread out over 0.4 and 4.5 km ... More
Presented by Paolo CUMANI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 204
The future GAMMA-400 space mission is aimed for the study of gamma rays in the energy range from ~20 MeV up to 1 TeV. The observations will carry out with GAMMA-400 gamma-ray telescope installed on-board the Russian Space Observatory. We present the detailed description of the architecture and performances of scientific data acquisition system (SDAQ) developing by SRISA for the GAMMA-400 instrumen ... More
Presented by Nikolay TOPCHIEV, Alexey BAKALDIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 094
The nature of fast radio bursts (FRBs), bright flashes of millisecond-duration and likely extragalactic origin, remains unknown. The lack of precise localizations compromises the search for multiwavelength counterparts, and their physical origin is subject to considerable debate. The detection of repeating bursts from FRB 121102 rules out a cataclysmic event as the progenitor for this object. Sub- ... More
Presented by Tarek HASSAN
Session: Poster & Coffee
Board #: 210
Telescopes based on the imaging atmospheric Cherenkov technique (IACTs) detect images of the atmospheric showers generated by gamma rays and cosmic rays as they are absorbed by the atmosphere. The much more frequent cosmic-ray events form the main background when looking for gamma-ray sources, and therefore IACT sensitivity is significantly driven by the capability of distinguishing between these ... More
Presented by Daniel NIETO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 208
One of the main goals of the Cherenkov Telescope Array (CTA) observatory is to improve the sensitivity by an order of magnitude, compared to the current ground-based gamma-ray observatories. Widening the energy coverage down to 20 GeV and up to 300 TeV is also an important goal. This goal will be possible by using Large-Sized Telescopes (LSTs) for the energy range 20-200 GeV, Medium-Sized Telescop ... More
Presented by Marcos LOPEZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 093
The MAGIC telescopes are a system of two Imaging Atmospheric Cherenkov Telescopes (IACTs) designed to observe very high energy (VHE) gamma rays above ~50 GeV. However, as IACTs are sensitive to Cherenkov light in the UV/blue and use photodetectors with a time response well below the ms scale, MAGIC is also able to perform simultaneous optical observations. Through an alternative system installed i ... More
Presented by Tarek HASSAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 220
The 15 year old cameras of the H.E.S.S. 12-m telescopes have been upgraded in 2015/2016, with the goals of reducing the system failure rate, reducing the dead time and improving the overall performance of the array. This contribution describes the various tests that were carried out on the cameras and their sub-components both in the lab and on site. It also gives an overview of the commissioning ... More
Presented by Simon BONNEFOY on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 131
NGC 253 was first detected by the High Energy Stereoscopic System (H.E.S.S.) in 2006 and is still the faintest as well as one of only two starburst galaxies that are known to emit gamma-rays up to TeV energies. This contribution will highlight the updated analysis of the observations towards NGC 253 with H.E.S.S. as well as the analysis of more than 8 years of Fermi-LAT data. The obtained gamma-ra ... More
Presented by Clemens HOISCHEN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 184
The Cherenkov Telescope Array (CTA) is a worldwide project aimed at building the next-generation ground-based gamma-ray observatory. CTA will be composed by two arrays of telescopes of different sizes, one in each Earth hemisphere, to achieve a full sky-coverage and a ten-fold improvement in sensitivity over an unprecedented energy range extending from 20 GeV to 300 TeV. Within the CTA project, th ... More
Presented by Maria Concetta MACCARONE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 249
We present a self-consistent model of the Fermi Bubbles, described as a decelerating outflow of gas and non-thermal particles produced within the Galactic center region, on a ~ 100 Myr timescale. Motivated by observations, we use an outflow with velocity O(100 km/s), which is slower than the velocities used in models describing the Bubbles as a more recent outburst. We take into account cosmic-ray ... More
Presented by Gwenael GIACINTI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 186
The pointing capability of a telescope in the Cherenkov Telescope Array (CTA) is a crucial aspect in the calibration of the instrument. It describes how a position in the sky is transformed to the focal plane of the telescope and allows precise directional reconstructions of atmospheric particle showers. The favoured approach for pointing calibrations of the Medium Size Telescopes (MST) is the uti ... More
Presented by Domenico TIZIANI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 239
Imaging Atmospheric Cherenkov Telescopes provide large gamma-ray collection areas > 10^4 m^2 and successfully probe the high energetic gamma-ray sky by observing extensive air showers during the night. The First G-APD Cherenkov Telescope (FACT) explores silicon based photoelectric converters (called G-APDs or SiPMs) which provide more observation time with strong moonlight, a more stable photon ga ... More
Presented by Sebastian Achim MUELLER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 123
The realization of multimessenger astrophysics will open up a new field of exploration of the most energetic phenomena in the universe. Messenger particles of all four of nature’s fundamental forces reach detectors on the ground and satellites in space. Finding coincident signals from these experiments in realtime will help us explore their sources. The Astrophysical Multimessenger Observatory N ... More
Presented by Azadeh KEIVANI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 247
on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 238
CTA will comprise a sub-array of up to 70 small sized telescopes (SSTs) in the southern array. Silicon photomultipliers (SiPM) cameras of gamma-ray telescopes can achieve good performance even during high night sky background conditions. The SST-1M project, a 4 m-diameter Davies Cotton telescope with 9 degrees FoV and a 1296 pixels SiPM camera, is designed to meet the requirements of the next gene ... More
Presented by Imen AL SAMARAI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 095
We report on the recent flaring activities from the BL Lac source 1ES 1215+303 detected by the Fermi-Large Area Telescope (100 MeV < E < 500 GeV). Since its first detection at energies above 100 MeV, several increments on the gamma-ray flux have been reported. Additionally, we use all the data set accumulated by Fermi-LAT spanning for more than eight years, along with the improved analysis techniq ... More
Presented by Floriana ZEFI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 175
We will present a concept for a calorimeter based on the novel approach of 3D position-sensitive virtual Frisch-grid CZT bars. This calorimeter aims to measure photons with energies from ~100 keV to 20-50 MeV. The expected energy resolution at 662 keV is better than 1% FWHM, and photon interaction position measurement accuracy is better than 1mm in all 3 dimensions. Each CZT bar is a rectangular p ... More
Presented by Alexander MOISEEV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 166
The SS 433 system despite decades of observations and theoretical modeling in radio, IR, optical, X-rays, and gamma rays still poses many questions, especially in the high energy range. It is a High Mass X-Ray Binary at a distance of  ~5.5 kpc with a stellar mass blackhole in a  13 day orbit around a supergiant A7Ib star. SS 433 is unique because of it dual relativistic jets with a hadronic com ... More
Presented by David KIEDA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 165
Supernovae remnants (SNRs) have been proven to be able to accelerate cosmic ray (CR) particles up to ∼ 10^14 eV. There is however no observational evidence so far that they can accelerate particles up to the "knee" of the CR spectrum at 10^15 eV (= 1 PeV). Some recent theoretical studies indicate that particles with PeV energies and beyond shall be produced early on, as the supernova (SN) shock ... More
Presented by Luigi TIBALDO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 086
The HAWC gamma ray observatory is located at the Sierra Negra Volcano in Puebla, Mexico at an altitude of 4,100 meters. HAWC is a wide field of view array of 300 water Cherenkov detectors that are continuously surveying ~ 2sr of the sky, operating since March 2015. The large collected data sample allows HAWC to perform an unbiased monitoring of the BL Lacs Mrk 421 and Mrk 501. These are the closes ... More
Presented by Jose Andres GARCIA-GONZALEZ, María Magdalena GONZÁLEZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 199
The HiSCORE experiment is an array of wide-angle, non-imaging detectors of atmospheric Cherenkov component of EAS operating in the ultra high energy range. Whereas arrays of particle detectors use shower front of secondary particles that reach the observation level, the HiSCORE deals with the shower light front, i.e. temporal and spatial distributions of Cherenkov photons generated in EAS. The tem ... More
Presented by Vladimir SAMOLIGA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 177
A dramatic progress in the field of computer vision has been made in recent years by applying deep learning techniques. State-of-the-art performance in image recognition is thereby reached with Convolutional Neural Networks (CNNs). CNNs are a powerful class of artificial neural networks, characterized by requiring fewer connections and free parameters than traditional neural networks and exploitin ... More
Presented by Tim Lukas HOLCH on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 163
The DArk Matter Particle Explorer (DAMPE) is a satellite-borne particle detector used to study High Energy Cosmic Rays and High Energy Gamma-Rays. It was successfully launched on the 17th of December 2015 from the Jiuquan Launching Center into a sun-synchronous orbit at an altitude of 500 km. The instrument consists of a BGO Electromagnetic Calorimeter for e/p separation; a silicon tracker intersp ... More
Presented by Maria Fernanda MUÑOZ SALINAS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 195
Gamma-rays are very important for probing high energy particle accelerators and to study the nature of dark matter. The DArk Matter Particle Explorer (DAMPE), launched on 17th December, 2015, is designed for high energy particle detection. Gamma-rays constitute only a tiny fraction of all the particles that impinge on our detector, it is thus critical to reject a large amount of ‘background’ t ... More
Presented by Zunlei XU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 099
The measurement of gamma rays originating from active galactic nuclei offers the unique opportunity to study the propagation of very-high-energy photons over cosmological distances. Most prominently, gamma rays interact with the extragalactic background light (EBL) to produce electron-positron pairs, imprinting an attenuation signature on gamma-ray spectra. The electron-positron pairs can also ind ... More
Presented by Florian GATÉ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 089
The high-synchrotron-peaked blazar 1ES 1959+650 (z=0.047) was among the first extragalactic sources detected in the very high energy gamma ray band (VHE, E > 100 GeV). In October 2015 the source entered an extended period of strong VHE flaring activity which continued through July 2016. This flaring activity in the TeV band was accompanied by a strong increase in the optical, X-ray, and GeV gamma- ... More
Presented by Marcos SANTANDER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 096
PSR J2032+4127 has recently been identified as being in a highly eccentric, long period (45-50 years) binary with the Be star MT91 213. Periastron is due to occur in November 2017 and this rare occurrence has prompted a multiwavelength monitoring campaign to determine if the system is a gamma-ray binary, and, if so, to study what would be only the second gamma-ray binary with a known compact objec ... More
Presented by Ralph BIRD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 097
Fast radio bursts (FRBs) are bright, unresolved and short flashes of radio emission originating from outside the Milky Way. The origin of these mysterious outbursts is unknown, but their high luminosity and short duration has prompted much speculation. The discovery that FRB 121102 repeats has enabled multiwavelength follow up, which has identified the host galaxy. VERITAS has observed the locatio ... More
Presented by Ralph BIRD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 211
The LHAASO (Large High Altitude Air Shower Observatory) experiment is currently under installation at high altitude (4410 m a.s.l., 600 g/cm2, 29,36° N, 100,14° E) in the Daochen site, Sichuan province, P.R. China, with the aim of studying with unprecedented sensitivity the spectrum, the composition and the anisotropy of cosmic rays in the energy range between 1012 and 1018 eV, as well as to act ... More
Presented by Giuseppe DI SCIASCIO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 189
The All-Sky Medium Energy Gamma-ray Observatory (AMEGO) will survey the entire sky every 3 hours with its wide field of view and excellent continuum sensitivity between 200 keV and 10 GeV, discovering new sources and automatically providing follow-up observation for multi-wavelength and multi-messenger transient sources. Many of these sources have the energy spectral peaks in the AMEGO band, and/o ... More
Presented by Judith RACUSIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 200
FACT, the First G-APD Cherenkov Telescope, is an Imaging Air Cherenkov Telescope (IACT) operating since 2011 at the Observatorio del Roque de los Muchachos on the Canary Island of La Palma. As typical for IACTs, its reflector is comprised of smaller mirror facets and not protected by a dome. In the case of FACT, 30 hexagonal facets form a total mirror area of 9.5 m². Hence, it is crucial to monit ... More
Presented by Maximilian NÖTHE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 103
Gamma-ray bursts (GRBs) are among the most luminous sources in the universe and the nature of their emission up to very high energy is one of the most important open issue connected to the study of these peculiar events. The High Altitude Water Cherenkov (HAWC) gamma-ray observatory, installed at an altitude of 4100 m a. s. l. in the state of Puebla (Mexico) completed its second year of full opera ... More
Presented by Magdalena GONZÁLEZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 109
The High-Altitude Water Cherenkov (HAWC) Observatory is a ground-based TeV gamma-ray observatory in the state of Puebla, Mexico at an altitude of 4100 m above sea level. Its ~22,000 m^2 instrumented area, wide field of view (2 sr), and >95% uptime make it an ideal instrument for discovering gamma-ray burst (GRB) emission at ~100 GeV. Such a discovery would provide key information about the origins ... More
Presented by Joshua WOOD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 213
We characterize the improved angular and energy resolution of a new likelihood gamma-ray reconstruction for VERITAS.  The algorithm uses the average photoelectrons stored in templates that are based simulations of large numbers of showers as a function of 5 gamma-ray parameters: energy, zenith angle, core location (x,y), and depth of first interaction in the atmosphere.  Comparing the template p ... More
Presented by Jodi CHRISTIANSEN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 119
Variable high energy gamma-ray emission reveals violent phenomena of cosmic accelerators, such as supermassive black holes, gamma-ray bursts, and probably gravitational wave bursts. The DArk Matter Particle Explorer (DAMPE) is China's first space science mission, dedicating to measuring high energy cosmic rays, electrons, and photons with high energy resolution. We report a search for variable gam ... More
Presented by Qiang YUAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 245
In order to search for GRBs above the GeVs energy range, high duty cycle and a wide field of view ground-based experiments in high altitude sites is needed. At present, the Water Cherenkov Detector prototype using the single particle technique are operates in Tibet for detecting GRBs. In this paper, results of the Water Cherenkov Detector prototype is reported.
Presented by Maoyuan LIU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 221
The combined use of air-Cherenkov telescopes with ground based particle detectors is investigated. While a hybrid detection technique using fluorescence telescopes and ground arrays is successfully applied by the Pierre Auger observatory, this study focuses on the combination of air-Cherenkov telescopes and ground arrays for detection of TeV gamma-rays. After the successful measurement of air show ... More
Presented by Merlin SCHAUFEL on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 241
In TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma-ray Astronomy) detector we are commissioning the first Imaging Atmospheric Cherenkov Telescope (IACT). The telescope drive system comprises a motor controller and two stepper motors for axis control. For the pointing calibration of the telescope a CCD-camera is installed on the reflector dish of the telescope. The position of the ... More
Presented by Dmitriy ZHUROV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 157
The impact of interstellar superbubbles on cosmic-ray acceleration and dif- fusion has long been discussed, but is poorly constrained by observations. The Orion-Eridanus superbubble is the nearest example of such an environment. The superbubble has formed from the stellar winds and explosions of the most massive stars in the Orion OB associations. They have jointly created a 300 pc diameter cavity ... More
Presented by Theo JOUBAUD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 232
The gamma-ray energy range from several hundred keV to a hundred MeV has remained largely unexplored since the observations by instruments on the Compton Gamma-Ray Observatory (1991- 2000) and on INTEGRAL (since 2002). This energy range is particularly challenging because it is firmly in the Compton-dominated regime where the interaction cross section is minimized. Accurate measurements are critic ... More
Presented by Regina CAPUTO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 133
Since 2010, the MAGIC collaboration has been sustaining optical polarisation observational campaigns in support to its blazar observations and studies. Along the years, the correlation between features in the optical polarisation emission and the gamma-ray behaviour of a number of sources at energies above 100 GeV has revealed that the polarised emission is an important diagnostic of the physical ... More
Presented by Ulisses BARRES DE ALMEIDA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 122
The CALET Gamma-ray Burst Monitor (CGBM) is secondary scientific instrument of the Calorimetric Electron Telescope (CALET) mission on the International Space Station (ISS). The primary instrument Calorimeter (CAL) is capable of detecting gamma-ray bursts (GRBs) in the GeV-TeV range, and the CGBM was attached to complement CAL gamma-ray observations in the keV-MeV range. The CGBM consists of 2 Hard ... More
Presented by Kazutaka YAMAOKA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 138
Studying diffuse gamma-ray emission with energies higher than 100 TeV has become especially topical due to detection of astrophysical neutrinos in the IceCube experiment. If these neutrinos are a result of decays of charged pions, neutral pions of the same energy should exist, and their decays must generate considerable flux of gamma rays with energies above 100 TeV. In order to confirm these expe ... More
Presented by Alexander LIDVANSKY on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 212
The new generation of wide Field of View (FoV) EAS instruments (HAWC and LHAASO) are both in the Northern hemisphere and have access to a limited portion of the Galactic plane. A crucial part of the sky needs to be studied as well. The Southern hemisphere includes the Galactic Center, the inner Galaxy, and includes a large number of extremely interesting sources (neutron stars, black holes, SNRs, ... More
Presented by Giuseppe DI SCIASCIO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 098
BL Lacertae is a blazar at the redshift of z = 0.069, eponym of the BL Lac blazar type. It is also a prototype of the low-frequency-peaked BL Lac (LBL) subclass, and the source was discovered with MAGIC in gamma rays already in 2005. In 2015 MAGIC observations of BL Lacertae were triggered by the Fermi-LAT analysis report in the MAGIC group, and were performed during 10 individual nights between 1 ... More
Presented by Shimpei TSUJIMOTO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 104
The First G-APD Cherenkov Telescope (FACT) has been monitoring Active Galactic Nuclei (AGN) for the past five years. The use of robust silicon photomultipliers (SiPMs) allows for a continuous, unbiased sampling even during bright-light conditions. This dataset is unique in its duration and high sampling density over a five-year period and promises insights into the very cores of AGN by investigati ... More
Presented by Thomas BRETZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 084
The standard VERITAS analysis techniques have insufficient sensitivity to particularly extended sources ($>0.5^circ$), such as the extended sources detected by Milagro. Therefore, the VERITAS collaboration is working towards implementing the newly developed Matched Runs Method (MRM) to analyze data on extended gamma-ray emission regions observed by VERITAS. The MRM uses two different observations, ... More
Presented by Anushka ABEYSEKARA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 132
Some Quantum Gravity models predict a violation of Lorentz invariance. Namely, the velocity of photons in vacuum could depend on their energies. One goal of Lorentz Invariance Violation (LIV) searches is to look for energy-dependent delays in the arrival time of very high energy (VHE) photons coming from distant sources such as TeV emitting Active Galactic Nuclei (AGN), mainly blazars. Up to now, ... More
Presented by Cédric PERENNES on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 085
BL Lacertae is the prototype of the blazar subclass known as “BL Lac type objects”. BL Lacertae itself is a low-frequency-peaked BL Lac (LBL). Very high energy (VHE, Energy > 200 GeV) gamma-ray emission from this source was discovered in 2005 by the MAGIC observatory while the source was in a flaring state. Since then, VHE gamma rays from this source have been detected over various epochs. In ... More
Presented by Anushka ABEYSEKARA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 169
ALTO is a wide field-of-view air shower array for very-high-energy (VHE) gamma-ray astronomy, proposed to be installed in the Southern Hemisphere at an altitude of ~ 5.1 km above sea level. The array will use water Cherenkov detectors, as in the HAWC observatory, but combined with scintillator detectors, to detect air showers induced by VHE gamma rays in the atmosphere. It will be designed to atta ... More
Presented by Satyendra THOUDAM on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 167
Imaging Air Cherenkov Telescopes (IACT) measure the faint flashes of Cherenkov light emitted by air-showers that are produced when charged particles or gamma rays hit the atmosphere. Therefore, the atmosphere above the IACT is an integral part of the detector. Variations in the performance of the IACT itself, but also changes in the absorption and scattering of Cherenkov light due to clouds or dus ... More
Presented by Adrian BILAND on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 168
Solid state photosensors, usually called SiPM or G-APD, seem ideal devices to be used in Imaging Atmospheric Cherenkov Telescopes (IACT). Nevertheless, their temperature dependence poses questions about their suitability in the harsh environment intrinsic to the operation of IACTs. While detailed measurements in the laboratory are possible with some sample sensors, limited data about the performan ... More
Presented by Adrian BILAND on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 143
Studying gamma-ray emission by Galactic objects is key to understanding the origins and acceleration mechanisms of Galactic cosmic ray electrons and hadrons. The HAWC observatory provides an unprecedented view of the gamma-ray sky at TeV energies and is particularly suited for the study of Galactic objects. However, the interpretation of the measured data poses several challenges. The high density ... More
Presented by Henrike FLEISCHHACK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 144
Gamma-ray emission from large structures is useful for tracing the propagation and distribution of cosmic rays throughout our Galaxy. For example, the search for gamma-ray emission from Giant Molecular Clouds may allow us to probe the flux of cosmic rays in distant galactic regions and compare it with the flux measured at Earth. Also, by observing at the gamma-ray signal, the composition of the co ... More
Presented by Henrike FLEISCHHACK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 136
Only five binary systems have been found to emit at TeV energies. Each of these systems is composed of a massive O or B type star and a compact object (black hole or a pulsar). The type of compact object and the origin of the gamma-ray emission is unknown for most of these systems. Extending the spectrum to higher energies can help disentangle the nature of the compact object as well as the partic ... More
Presented by Binita HONA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 224
High-precision ground-based observations of the very high energy (VHE) sources with Imaging Atmospheric Cherenkov Telescopes (IACTs) require accurate calibration in terms of the atmospheric transmission profiles. For this purpose, various cuts on observable parameters are usually applied in order to select the data corresponding to sufficiently good weather conditions. Furthermore, the MAGIC and C ... More
Presented by Ievgen VOVK on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 090
Blazars are highly variable objects and their spectral energy distribution (SED) features two peaks. The emission at low energies is understood, however, the origin of the emission at TeV energies is strongly debated. While snapshots of SEDs usually can be explained with simple models, the evolution of SEDs challenges many models and allows for conclusions on the emission mechanisms. Leptonic mode ... More
Presented by Daniela DORNER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 145
Observations of cosmic gamma rays are important for studying high energy phenomena in the universe. Since 2008, the Large Area Telescope on the Fermi satellite has surveyed the whole gamma-ray sky in the sub-GeV/GeV energy region, and accumulated a large amount of data. However, observations at the low galactic latitude remains difficult because of a lack of angular resolution, increase of backgro ... More
Presented by Hiroki ROKUJO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 148
It is known from literature that sources like the Crab, Mrk 421, Mrk 501, and many others do not follow a simple power law in the TeV gamma ray spectrum. In this respect, we test two additional models: power law with exponential cut-off and a log-parabola, for the sources in the second HAWC catalog using HAWC data for 508 transits. Based on the test statistic we suggest the most appropriate model ... More
Presented by Filiberto Zahuantitla HUEYOTL, Cesar ALVAREZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 147
Galactic Cosmic Rays (CRs) can reach the Sun, and this is proven by looking at the quiescent solar gamma-ray emission up to GeV energies. Measurements of high-energy Galactic CRs in the inner heliosphere close to the Sun have never been performed, hence studying the gamma-ray emission close to the Sun indirectly informs us about CRs in this region. The solar gamma-ray steady state was first detect ... More
Presented by Elena ORLANDO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 251
Astrophysical scenarios provide a unique opportunity to test the possible signatures of Lorentz Invariance Violation (LIV) due to the high energies and the very long distances they involve. An isotropic correction to the photon dispersion relation, by hypothetical Lorentz invariance violation, has a consequence that photons of sufficient energy are unstable and decay very fast. The High Altitude W ... More
Presented by Humberto MARTÍNEZ on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 191
As one of the important targets of the DArk Matter Particle Explorer (DAMPE), the GeV gamma-ray observations of DAMPE with good angular resolution, high energy resolution and high background rejection facilitate the search of fine structures in the spectra of gamma-ray sources. In this work we summarize the performance of DAMPE for gamma-ray detection using simulation data, including the effective ... More
Presented by Kaikai DUAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 162
Nearby electron/positron accelerators, mostly Pulsar Wind Nebulae (PWNe), have been proposed as potential origins of the positron excess above 10 GeV. The HAWC Observatory reveals two very extended sources spatially coincident with two nearby middle-aged pulsars: Geminga and PSR B0656+14, suggesting ultra-relativistic electrons/positrons accelerated in our backyard. Morphological studies on these ... More
Presented by Hao ZHOU on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 219
The Slewing Mirror Telescope (SMT) is the first orbital instrument, using motorized mirror for observations of the space, designed to shed light on first seconds of Gamma-Ray Bursts (GRBs) prompt UV/optical emission. The SMT is main component of the Ultra-Fast Flash Observatory (UFFO). Once GRB is detected by UFFO X-ray coded mask camera, SMT turns its motorized mirror within seconds to observe ... More
Presented by Georgii GAIKOV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 101
The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory is an extensive air shower array located in Puebla, Mexico. The closest three radio galaxies within the HAWC field of view, NGC 1275, PKS 0625-35 and M87, have been detected in very high energies. In this work we report upper limits on the TeV emission of these three radio galaxies, being M87 the most interesting because it has shown f ... More
Presented by Daniel AVILA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 088
The Hight Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory monitors the gamma-ray sky in the energy range from 100 GeV to 100 TeV and has detected two very high energy (VHE) blazars: Markarian 421 (Mrk 421) and Markarian 501 (Mrk 501) in 1.5 years of observations. In this work, we present the spectral analysis above 1 TeV of both sources using a maximum likelihood method. The main objectives ... More
Presented by Sara COUTIÑO DE LEON on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 256
Observations of extragalactic sources in the high energy (HE, E>100 MeV) and very high energy (VHE, E>100 GeV) domains allow to search for axion-like particles (ALP) and constrain the extragalactic magnetic field (EGMF) parameters. Such studies have recently received much attention thanks to the advent of new instruments and the progress of the extragalactic background light (EBL) models. We revie ... More
Presented by Timur DZHATDOEV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 198
The purpose of GRAINE (Gamma-Ray Astro-Imager with Nuclear Emulsion) experiments is the observation of gamma-ray objects, diffuse gamma-rays and transient phenomena such as GRBs in 10 MeV to 100 GeV energy region with the balloon borne emulsion films. In May 2015, we have launched the balloon of an emulsion telescope in Australia, of which duration was 14.5 hours. Using this flight data, we search ... More
Presented by Saya YAMAMOTO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 121
The vast majority of extragalactic sources detected in the very high energy (E> 200 GeV) are active galactic nuclei (AGN) located at cosmological distances. During their travel towards earth, the emitted gamma-rays suffer for absorption by the extragalatic background light (EBL). The density of the EBL is not very well constraint by direct or indirect measurement which leads to uncertainties on th ... More
Presented by Carlo ROMOLI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 237
The simulation of atmospheric showers through Monte-Carlo processes as well as their projection into Imaging Atmospheric Cherenkov Telescopes (IACT) is long and very computing intensive. As these simulations are the most advanced ones from a physics point of view, they are not suited for simple tests. Here we present a Python package developed in order to make simple simulations of atmospheric ele ... More
Presented by Thomas VUILLAUME on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 236
In the recent years, physics experiments have definitely entered the Big Data era. Future telescopes (such as SKA, the Cherenkov Telescope Array, the LSST, Virgo-LIGO…) will generate more data than ever. This is an exciting time as the analysis and the combination of all these data will lead to new discoveries and even to new ways to do science, but it comes with a price. Data management is now ... More
Presented by Thomas VUILLAUME on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 192
Gamma-ray photons detected by DArk Matter Particle Explorer (DAMPE) can be used to calibrate the instrument response function. The unbiased and precise knowledge of spatial resolution of the detector is crucial for gamma-ray science of DAMPE. We have obtained point-spread function (PSF) from Monte Carlo (MC) simulation of the DAMPE detector. This work present the calibration of the PSF with brigh ... More
Presented by Zhaoqiang SHEN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 180
In the analysis of VERITAS and other IACT data, it is expected to get a distribution of statistical significances in skymap bins with mean of zero and width of unity in the absence of a VHE signal. However, it is not uncommon to see significance distributions of width greater than unity, indicating that the background is poorly estimated and the significances in the ROI are incorrect. This work ex ... More
Presented by Benjamin ZITZER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 115
DArk Matter Particle Explorer (DAMPE) is a high energy cosmic ray and gamma-ray telescope sensitive in energies 1 GeV to 10 TeV. After one year's on-orbit operation, tens of sources including PSR, AGN, SNR etc. have been identified in the DAMPE gamma-ray sky. Here we present the preliminary analysis of DAMPE observation of some selected bright sources, including their gamma-ray images, significanc ... More
Presented by Yunfeng LIANG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 102
At TeV energies and above gamma rays can induce electromagnetic cascades, whose charged component is sensitive to intervening intergalactic magnetic fields (IGMFs). When interpreting gamma-ray measurements in the energy range between a few GeV and hundreds of TeV, one has to carefully account for effects due to IGMFs, which depend on their strength and power spectrum. Therefore, gamma-ray-induced ... More
Presented by Rafael ALVES BATISTA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 182
GRAINE (Gamma-Ray Astro-Imager with Nuclear Emulsion) is a project aiming to observe cosmic gamma-ray sources. The gamma-ray detector consists of nuclear emulsion films, and its angular resolution is about one order magnitude better than that of existing gamma-ray telescopes. In 2015, we succeeded balloon flight with JAXA in Australia Alice-Springs. The size of the telescope was 3780 cm^2 and flig ... More
Presented by Hiroaki KAWAHARA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 215
Gammapy is a Python package for high-level gamma-ray data analysis, written in Python and built on Numpy, Scipy and Astropy. Starting with event lists and instrument response information, it is possible to analyse gamma-ray data and to create for example sky images, spectra and lightcurves, and to determine the position, morphology and spectra of gamma-ray sources. So far Gammapy has mostly been u ... More
Presented by Matteo CERRUTI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 118
The Cherenkov Telescope Array (CTA) observatory will probe the non-thermal universe above 20 GeV up to several hundreds of TeV with a significant improvement in sensitivity compared to current experiments. Its outstanding capabilities will allow to increase the number of extragalactic cosmic accelerators detected at very high energy (VHE) and therefore to better constrain the population of VHE acc ... More
Presented by Julien LEFAUCHEUR on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 117
Blazars dominate the extragalactic sky above 100 MeV. They belong to the class of active galactic nuclei and present an emission over a broad range of frequencies (from radio to gamma-rays). Blazars have the particularity of possessing relativistic jets quasi-aligned to the line of sight. An important Doppler effect blue-shifts their spectra and increase their luminosity. In the very high energy r ... More
Presented by Julien LEFAUCHEUR on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 207
The development of a 3D or cube analysis to simultaneously fit a spectral and morphological model on a data cube than contains the events for an observation in three dimensions (energy, longitude and latitude) in Cerenkov gamma-ray astronomy is a challenge. The strong variation of the instrument response function to the residual cosmic rays background with the observation conditions makes it very ... More
Presented by Daniel KERSZBERG on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 193
The DArk Matter Particle Explorer (DAMPE) has been successfully launched on the December 17th 2015 and it is able to detect electrons and photons with an unprecedented energy resolution in an energy range going from a few GeV up to 10 TeV. In this work we present a machine learning-based method for photon selection in DAMPE. The selection is based on a classifier which uses the information from th ... More
Presented by Simone GARRAPPA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 231
The Cherenkov Telescope Array (CTA) is the next generation of ground-based very high energy gamma-ray Imaging Atmospheric Cherenkov Telescopes (IACTs). Since observations with this technique are affected by atmospheric conditions, an accurate knowledge of the atmospheric properties is fundamental to improve the precision and duty cycle of the CTA. Measurements of absorption and scattering properti ... More
Presented by Laura VALORE on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 194
We have implemented a fast simulation algorithm (FASTSIM) which can generate photon events from any astrophysical source and can process these events according to the DAMPE instrument response functions. The Galactic diffuse emission up to 10 TeV is evaluated with the DRAGON cosmic-ray propagation code, in which cosmic-ray interactions with the interstellar medium are described using the cross-sec ... More
Presented by Simone GARRAPPA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 137
One of the more recent updates in the PICARD code for modeling Galactic cosmic ray transport allows the use of a new, observation-driven Interstellar Radiation Field (ISRF) model. We show that the use of this new ISRF model yield significantly increased contributions to the total Galactic diffuse gamma-ray flux by Inverse Compton. This increase is notably throughout the Galactic Plane, but most pa ... More
Presented by Olaf REIMER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 081
The gamma-ray energy range from several hundred keV to a hundred MeV has remained largely unexplored since the observations by instruments on the Compton Gamma-Ray Observatory (1991- 2000) and on INTEGRAL (since 2002). This energy range is particularly challenging because it is firmly in the Compton-dominated regime where the interaction cross section is minimized. Accurate measurements are critic ... More
Presented by Jeremy PERKINS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 082
The All-Sky Medium Energy Gamma-ray Observatory (AMEGO) will survey the entire sky every 3 hours with its wide field of view and excellent continuum sensitivity between 200 keV and 10 GeV. This is a prime mission to study the long-term and short-term behavior of Active Galactic Nuclei (AGN) in the MeV range. Studying AGN that have their peak power output in the MeV band will allow us to determine ... More
Presented by Jeremy PERKINS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 190
We present BurstCube, a novel CubeSat that will detect and localize Gamma-ray Bursts (GRBs). BurstCube will detect long GRBs, attributed to the collapse of massive stars, short GRBs (sGRBs), resulting from binary neutron star mergers, as well as other gamma-ray transients in the energy range 10-1000 keV. sGRBs are of particular interest because they are predicted to be the counterparts of gravitat ... More
Presented by Judith RACUSIN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 252
The origin of the very high energy (VHE) emission from non-blazar sources, like radio galaxies, is still debated. The compactness of the emission regions - as inferred from high-variability flux observations - suggests that the emission may come from the non-screened core region at the jet launching. Recently, it has been shown that the power released by fast magnetic reconnection driven by turbul ... More
Presented by Pankaj KUSHWAHA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 159
Ashra (All-sky Survey High Resolution Air-shower detector) is a project to build an unconventional optical telescope complex that images very wide field of view, covering 80% of the sky, yet with the angle resolution of a few arcmin, sensitive to the blue to UV light with the use of image intensifier and CMOS technology. The project primarily aims to observe Cherenkov and fluorescence lights from ... More
Presented by Hitoshi OSHIMA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 206
The first imaging atmospheric Cherenkov telescope as a part of TAIGA ( Tunka Advansed Instrument for cosmic rays and Gamma Astronomy) detector was put into operation in the Tunka valley in December 2016. The reflector of the telescope follows the Davis-Cotton design. It is composed of 34 glassmirror tiles, each of 60 cm diameter and has a diameter of 4.3 m. The focal length is 4.75 m. The imaging ... More
Presented by Nima LUBSANDORZHIEV on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 106
This work aims to investigate the systematic uncertainty in gamma-ray spectra arising from saturation effects from bright images reconstructed by VERITAS. The goal of the work is to improve or validate the energy resolution used for deriving gamma-ray spectra in the sub-TeV to multi-TeV energy regime with VERITAS. Saturation from multi-TeV gamma-ray events affect the image brightness used to recon ... More
Presented by Rita WELLS on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 108
The detection of the Fermi Bubbles suggests that spiral galaxies such as the Milky Way can undergo active periods. Using gamma-ray observations, we can investigate the possibility that such structures are present in other nearby galaxies. We have analyzed the region around the Andromeda Galaxy (Messier Catalog M31) for signs of bubble-like emission using TeV gamma-ray data recorded by the High Alt ... More
Presented by Joshua WOOD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 223
The first IACT as part of the gamma and cosmic-ray experiment TAIGA was installed in the Tunka valley near lake Baikal in fall 2016. In the following months different systems of the telescope were put into test operation. We started the commissioning phase of operating the telescope in time coincidence with the wide angle integrating air Cherenkov HiSCORE array, which for the time being comprises ... More
Presented by Lyubov SVESHNIKOVA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 120
PSR B1259-63 is a gamma-ray binary system composed of an O9.5Ve main sequence star, LS 2883, and a 47.8ms spinning neutron star orbiting it every 3.4 years in a highly eccentric orbit (e = 0.87). PSR B1259-63 is so far the only gamma-ray binary in which the compact object has been firmly identified. H.E.S.S. observed this system during its periastron passage in 2004, 2007, 2011 and 2014. Fort this ... More
Presented by Carlo ROMOLI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 242
We present a new paradigm for the simulation of arrays of Imaging Atmospheric Cherenkov Telescopes (IACTs) which overcomes limitations of current approaches. Up to now, all major IACT experiments rely on the same Monte-Carlo simulation strategy, using predefined observation and instrument settings. Simulations with varying parameters are generated to provide better estimates of the Instrument Resp ... More
Presented by Markus HOLLER on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 153
The ASTRI mini-array will be one of the precursors of CTA at the Southern site. Here we present optimization studies for two possible layouts of the ASTRI mini-array, composed of 9 and 15 SST-2M telescopes, respectively. Despite the small number of telescopes involved, the good sensitivity up to energies of several tens of TeV will allow us to obtain early scientific results on several targets. We ... More
Presented by Andrea GIULIANI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 154
Here we present a classifications of gamma-ray emitting supernova remnants (SNRs) based on their spectrum.  Spectral data, ranging from 50 MeV to tens of TeV, were taken from the literature and (where available) from catalogs. Every spectra were fitted and the resulting best-fit model was used to derive a parameter (HR) characterizing the hardness of the spectrum. The resulting HR distribution is ... More
Presented by Andrea GIULIANI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 110
The Fermi Gamma-ray Burst Monitor (GBM) is an all-sky monitoring instrument sensitive to energies from 8 keV to 40 MeV. Over the past 8 years of operation, the GBM has detected over 240 gamma-ray bursts per year and provided timely GCN notices with localization to few-degree accuracy for follow-up observations. In addition to GRBs, Galactic transients, solar flares, and terrestrial gamma-ray flash ... More
Presented by Michelle HUI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 111
With the discovery of gravitational waves by LIGO, which are created by a merger of two compact objects, the Fermi Gamma-ray Burst Monitor (GBM) currently employs two search algorithms to look for electromagnetic counterparts. A dedicated search for a joint detection of a coincident gamma-ray burst (GRB) and gravitational wave event, and a general search for weak GRBs in the GBM continuous data th ... More
Presented by Michelle HUI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 158
LS 5039 is a binary system located at 3.5 kpc from the Earth. It is composed of a compact object orbiting around a O6.5V star every ~3.9 days in a moderately eccentric orbit (e = 0.35) and emitting light across the whole electromagnetic spectrum, from radio to gamma-rays. The system displays a periodic spectral modulation related to the orbital motion of the compact object. The spectral variatons ... More
Presented by Christian MARIAUD on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 196
The High Altitude Water Cherenkov (HAWC) is a wide field-of-view gamma-ray observatory sensitive to gamma-rays in the 300 GeV - 100 TeV energy range, located in Mexico at an altitude of 4,100 m above sea level. The detector consists of 300 Water Cherenkov Detectors with a volume of 200,000 l each, having a footprint of 22,000 m^2, a duty cycle of >95% and a field of view (FoV) of 2sr. In this work ... More
Presented by Cederik DE LEÓN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 197
In a ground-based Cherenkov EAS timing array the reconstruction of the shower direction is based on the measured photon arrival times at the sensor stations. Relative time offset calibration down to sub-nsec precision is needed for optimal pointing precision. For large arrays, a direct time calibration by artificial light sources introduces a large effort. We discuss a new, hybrid method, that com ... More
Presented by Ralf WISCHNEWSKI on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 243
The Latin American Giant observatory is an international network of water Cherenkov detectors (WCD) set at differents latitudes and altitudes across Latin America. In Mexico, LAGO has a site on the top of Sierra Negra volcano, located at 4530 m of altitude. The array consists of three WCD with 7.3 m in diameter and 1.2 m of height, filled up with ultra pure water. The WCDs were sectioned in four s ... More
Presented by IBRAHIM TORRES, ESPERANZA CARRASCO, EDUARDO MORENO, ALINE GALINDO TELLEZ, ALBERTO CARRAMIÑANA on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 222
The HAWC gamma ray observatory reconstructs atmospheric showers induced by very high energy primary cosmic- or gamma-rays. Cosmic rays are three orders of magnitude more frequent than primary gammas and therefore it is necessary to perform the best gamma-hadron discrimination for each event to be able to survey the gamma ray sky. Single vertical muons produce very characteristic signals in the 300 ... More
Presented by Ruben ALFARO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 255
Pulsars and their synchrotron nebulae have been extensively observed in the gamma-ray energy band for the last 15 years. The LAT detector on board of the Fermi satellite increased the number of known gamma-ray emitting pulsars by one order of magnitude, touching the mark 200. On the other hand, the imaging Cherenkov telescopes proved that pulsar wind nebulae are the most common class of sources ra ... More
Presented by Razmik MIRZOYAN on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 257
KM3NeT is the next generation neutrino telescope. Cherenkov light from neutrino-induced secondary charged particles will be detected by an array of digital optical modules (DOM). A group of 18 DOMs, distributed in space along two thin ropes, constitutes the essential part of a 750 meters tall detection unit (DU). It is very hard to visualize in mind such a structure, despite many graphical represe ... More
Presented by Carlos Maximiliano MOLLO on 13/7/2017 at 6:00
Session: Poster & Coffee
Board #: 145
The Large Volume Detector (LVD) has been continuously taking data since 1992 at the INFN Gran Sasso National Laboratory. The experiment is sensitive to neutrino bursts from gravitational stellar collapses with full detection probability over the Galaxy. We have searched for neutrino bursts in LVD data taken over 8577 days of operation. No evidence of neutrino signals has been found between June 19 ... More
Presented by Carlo Francesco VIGORITO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 127
The IceCube Neutrino Observatory is a cubic kilometer neutrino telescope located in the Antarctic ice. Recently, IceCube has measured a diffuse all-sky all-flavor astrophysical neutrino flux above 30 TeV. However, the origin and production of these particles still remains unknown. Given the observed flux, the absence of observations of bright point-sources could be explained by a large population ... More
Presented by René REIMANN, Kai KRINGS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 144
The Super-Kamiokande Gadolinium project (SK-Gd) aims to measure Supernova Relic Neutrinos (SRN) by loading 0.2% of Gadolinium Sulfate into Super-Kamiokande. However, RI backgrounds (e.g. U, Th, Ra) are also included in Gadolinium Sulfate. The Super-Kamiokande is multipurpose detector that not only for SRN search but also the measurement of solar neutrino. In order to continue the measurement of so ... More
Presented by Shintaro ITO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 177
The upper bound of the neutrino mass sum is currently best constrained by cosmological surveys. Free-streaming massive neutrinos suppress the structure growth at small scales. The total mass of neutrinos is expected to be constrained by the next generation weak lensing surveys (LSST, Euclid, WFIRST). These surveys will be sensitive to structure evolution in the strongly nonlinear regime, warrantin ... More
Presented by Jia LIU on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 163
Large-scale neutrino telescopes use water or ice as a target medium. The detection of particles is therefore restricted to those which produce Cherenkov light, bremsstrahlung, or visible secondaries. This excludes the detection of slowly moving, massive particles proposed in theories which go beyond the Standard Model of particles, including magnetic monopoles. Simulations show that these particle ... More
Presented by Anna POLLMANN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 121
The IceCube Neutrino Observatory has detected a diffuse astrophysical neutrino flux which is expected to have a close to equal ratio of neutrino flavors due to thorough mixing over astronomical baselines. However, IceCube has yet to detect astrophysical tau neutrinos. A tau neutrino undergoing charged current interaction will have two subsequent energy losses, the first from the neutrino interacti ... More
Presented by Maximilian MEIER, Logan WILLE on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 137
IceCube is a cubic kilometer neutrino detector optimized to register rare interactions of highly energetic particles. While charged current interactions leading to charged muons can be easily distinguished from those leading to cascades of O(10 m) extension, the 17 m sensor distance makes it very challenging to identify the type of cascade as being due to a hadronic fragmentation or due to electro ... More
Presented by Anna STEUER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 110
KM3NeT is a distributed neutrino research infrastructure in the Mediterranean sea. KM3NeT/ARCA is the high energy component and is dedicated for the search of extraterrestrial neutrino sources in the TeV-PeV range. One major goal is to study the source of the recently discovered neutrino flux by IceCube. Furthermore, KM3NeT/ARCA is optimised to study galactic neutrino point sources. Further insigh ... More
Presented by Thomas EBERL on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 116
Recently the IceCube collaboration confirmed the astrophysical neutrino flux in the muon neutrino channel with high significance using six years of data. This analysis used a likelihood approach with reconstructed muon energy and zenith angle as observables to measure the properties of the astrophysical muon neutrino flux. Additionally constraints on the prompt atmospheric neutrino flux from the d ... More
Presented by Christian HAACK on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 122
High efficiency, high reliability and low power consumption are the main drivers for the design of the front-end electronics of the KM3NeT neutrino telescope. The so-called Phase II of the KM3NeT project, to be started after the completion of the ongoing Phase I, is currently under design. It presents an opportunity to enhance the performance of the front-end electronics. The present article descr ... More
Presented by Diego REAL MAÑEZ on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 133
High reliability of electronics is necessary for those systems operating in hard conditions, in particular when in-situ maintenance is not possible, as it is the case for space or deep-sea projects. The KM3NeT infrastructure, whose first Detection Units are currently being deployed on the Mediterranean Sea at depths of 2500-3500 meters, has chosen the FIDES methods as reliability technique to esti ... More
Presented by Giulia ILLUMINATI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 161
The KM3NeT detector is a Cherenkov neutrino telescope being installed in two Mediterranean deep-sea sites. Its infrastructure will comprise several thousand identical multi-PMT digital optical modules (DOMs) arranged in three-dimensional spatial arrays. The first two detection lines of KM3NeT are taking data since December 2015 and May 2016 respectively. These lines are the first of 230 KM3NeT-ARC ... More
Presented by Karel MELIS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 152
A new analysis, aimed to improve the current ANTARES measurement of the atmospheric neutrino oscillation parameters is presented. Up-going atmospheric neutrinos which traverse the Earth are affected by the phenomenon of neutrino oscillations, which suppresses the observed flux of ν μ induced events. For vertical up-going neutrinos the first oscillation maximum is reached at an energy of around 2 ... More
Presented by Ilenia SALVADORI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 111
The Fermi Bubbles are giant lobe-shaped structures of γ-ray emission extending above and below the Galactic Center. A variety of both hadronic and leptonic models has been proposed to explain the emission, yet its origin remains unclear. Only in hadronic scenarios, the γ-ray flux is accompanied by an associated neutrino flux that might be detected with large volume neutrino detectors. ANTARES is ... More
Presented by Steffen HALLMANN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 153
K40 is the most abundant radioactive isotope in sea water. Its Cherenkov light wavelength spectrum is equal to the one produced by atmospheric muons detected by ANTARES; thus it constitutes the principal source of background light. However, K40 is as well an important calibration tool. In ANTARES, the optical modules (OMs) are stored in groups of three (storey), and, if a K40 decays near a storey, ... More
Presented by Ilenia SALVADORI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 157
Recent advances, especially in image recognition, have shown the capabilities of deep learning. Deep neural networks can be extremely powerful and their usage is computationally inexpensive once the networks are trained. While the main bottleneck for deep neural networks in the traditional domain of image classification is the lack of sufficient labeled data, this usually does not apply to physics ... More
Presented by Mirco HUENNEFELD on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 100
The IceCube Collaboration recently reported the first detection of high-energy extraterrestrial neutrinos. Nonetheless, their origins are still unknown. In view of the IceCube discovery, active galactic nuclei (AGN) and gamma-ray bursts (GRBs) have been explored as possible sources, but no significant neutrino flux from these objects has been observed yet. The AGN that have previously been investi ... More
Presented by Nick VAN EIJNDHOVEN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 129
The KM3NeT collaboration has started the implementation of the first phase of the ARCA cubic-kilometre-scale neutrino telescope in the Northern hemisphere within an integrated platform for Earth and deep sea sciences. The ARCA detector will be located in the Mediterranean Sea close to the Sicilian coast, about 100 km offshore Capo Passero at a depth of 3500 m. This location will allow surveying a ... More
Presented by Rosa CONIGLIONE on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 126
The IceCube Collaboration has observed a high-energy diffuse astrophysical neutrino flux consistently in two detection channels: first using high-energy events interacting inside the detector and secondly with through-going muon-neutrino induced muons. In order to identify the sources of this flux, these muon-neutrino events are ideal messenger particles because of their excellent angular resoluti ... More
Presented by René REIMANN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 151
Analysis of an exposure of 6x10^20 protons on target of the NuMI muon neutrino beam have produced precision measurements of both disappearance and appearance oscillations, including the first hints that muon to tau neutrino mixing is not maximal.
Presented by Alec HABIG on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 173
The AMoRE (Advanced Mo-based Rare process Experiment) is an experimental search for neutrinoless double beta decay of Mo-100 using enriched in Mo-100 and depleted in Ca-48 calcium molybdate (48deplCa100MoO4) scintillating crystals at low temperature aiming to investigate the inverted hierarchy of the neutrino mass pattern. The AMoRE uses metallic magnetic calorimeter sensors to read out scintillat ... More
Presented by Young Soo YOON on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 118
The IceCube Neutrino Telescope has observed a diffuse all-flavor astrophysical neutrino flux above 30 TeV. The neutrino flux is currently compatible with an isotropic distribution; no astronomical counterparts have been identified yet. Here, we propose a binned forward-folding likelihood fit of the available neutrino data to search for integrated emission along the Galactic plane. We use two indep ... More
Presented by Kai KRINGS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 117
Located at the South Pole, the IceCube Neutrino Observatory is the world largest neutrino telescope, instrumenting one cubic kilometre of Antarctic ice at a depth between 1450m to 2450m. In 2013 IceCube reported the first observations of a diffuse astrophysical high-energy neutrino flux. Although in the meantime the collaboration has detected more than 50 high energy neutrino events, the origin of ... More
Presented by Kai KRINGS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 114
The MAGIC telescopes, located at the Roque de los Muchachos Observatory (2200 a.s.l.) in the Canary Island of La Palma, are placed on the top of a mountain, from where a window of visibility of about 5 deg in zenith and 80 deg in azimuth is open in the direction of the surrounding ocean. This permits to search for a signature of particle showers induced by earth-skimming cosmic tau neutrinos in th ... More
Presented by Joaquim PALACIO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 113
A search for angular correlations between high-energy neutrinos detected by ANTARES and the highest energy cosmic ray events measured by the Pierre Auger Observatory and the Telescope Array experiments is presented. The statistic analysis, based on a likelihood-ratio test, is constructed from the angle between the directions of the neutrino events and the cosmic rays. To evaluate the significance ... More
Presented by Irene DI PALMA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 176
The Askaryan Radio Array (ARA) is an ultra-high-energy (UHE) neutrino detector under construction at the South Pole. Using antennas deployed up to 200m deep in the ice, ARA searches for the impulsive Askaryan radio signals from UHE neutrino interactions. Directional reconstruction of these events is complicated by the inhomogeneity of the polar ice cap, causing the radio waves to bend as they trav ... More
Presented by John KELLEY on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 164
The ANTARES detector is the largest neutrino telescope in operation in the North Hemisphere. One of the main goals of the ANTARES telescope is the search for point-­‐like neutrino sources. For this reason both the pointing accuracy and the angular resolution of the detector are important and a reliable way to evaluate these performances is needed. The measurement of the Moon shadow , i.e. the d ... More
Presented by Matteo SANGUINETI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 159
The Wavelength-shifting Optical Module (WOM) is a novel optical photosensor concept developed in the context of the IceCube-Gen2 neutrino telescope, a next generation multi-km3 neutrino telescope at the South Pole. It provides a large photosensitive area with low detector noise and improved UV sensitivity. This is achieved by combining a wavelength-shifter (WLS) coated tube with two small, low noi ... More
Presented by Peter PEIFFER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 134
We present a search for ANTARES neutrino events in spatial and temporal coincidence with IceCube High-Energy Starting Events (HESE). This analysis, extended to the full visible sky of ANTARES, uses a maximum likelihood ratio approach. All neutrino flavors yielding track or cascade events are observed. Each HESE direction is treated as potential transient neutrino source direction while the neutrin ... More
Presented by Giulia ILLUMINATI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 124
By constantly monitoring at least one complete hemisphere of the sky, neutrino telescopes are well designed to detect neutrinos emitted by transient astrophysical events. Real-time searches for ANTARES neutrino candidates coincident with gamma-ray bursts, High-Energy Starting Events and Extremely High-Energy Events detected by IceCube and with gravitational wave (GW) candidates observed by LIGO/Vi ... More
Presented by Damien DORNIC on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 125
A detailed Geant4 simulation of an optical module was originally was implemented for the ANTARES optical modules. Recently, it was extended to simulate the KM3NeT multi-PMT optical module. Optical modules are reproduced following technical drawings and include standard low energy physics processes including the response of the bialkali photocathode. The simulation setup is easily reconfigurable fo ... More
Presented by Damien DORNIC on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 138
Since the detection of a diffuse flux of high-energy astrophysical neutrinos in 2013 by the IceCube neutrino observatory, their origin so far has remained unknown. With no steady sources of neutrinos observed in IceCube data, neutrinos produced during transient astrophysical events are a viable alternative. Identification of an electromagnetic counterpart that is coincident in time and space would ... More
Presented by Erik BLAUFUSS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 141
The Askaryan Radio Array (ARA) is a large-scale ultra-high energy neutrino detector under construction in the deep, radio-transparent ice of the South Pole. The first three ARA stations have been deployed and operated over the last several years. Three additional autonomous stations will be deployed this coming Austral Summer season, each with >1 km^3-ster of acceptance to cosmogenic neutrinos. Th ... More
Presented by Michael DUVERNOIS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 103
IceCube is a 1 cubic kilometer size neutrino detector located at the South Pole. It detects all-sky neutrinos of all flavors. We present a novel analysis method and performance studies to determine the neutrino-nucleon deep-inelastic scattering cross section at high energies. The analysis uses atmospheric and extraterrestrial neutrino-induced electromagnetic and hadronic showers (cascades) in the ... More
Presented by Yiqian XU on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 143
The ARIANNA project seeks to observe cosmogenic neutrinos in the energy range of 10^16 to 10^21 eV through the use of a grid of over 1000 independent radio detector stations. These stations search for the characteristic Askaryan radio pulses, from particle cascades generated in the ice by these neutrinos, with a bandwidth of 50 - 1000 MHz. Spaced a kilometer apart, this array would effectively sur ... More
Presented by Steven BARWICK on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 104
One of the prime goals of the IceCube Neutrino Observatory is to identify tau neutrinos in the astrophysical neutrino flux. The most recent tau neutrino search is based on the high-energy starting event (HESE) sample and has not found any events that could be classified as tau neutrinos. However, this sample rejects all events in the outer detector region to suppress atmospheric background. Given ... More
Presented by Marcel USNER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 101
The ANTARES telescope is well suited for detecting astrophysical transient neutrino sources as it can observe with high duty cycle an instantaneous field of view of 2pi. The background due to atmospheric particles can be drastically reduced, and the point-source sensitivity improved, by selecting a narrow time window around possible neutrino production periods. Blazars, being radio-loud active gal ... More
Presented by Agustin SÁNCHEZ LOSA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 155
IceCube-Gen2, an upgrade of the IceCube Neutrino observatory, is designed to enhance its detection capability of neutrinos above 10 TeV by a significantly increase of instrumented volume compared to IceCube. Up to an order of magnitude increase of astrophysical neutrinos is expected for IceCube-Gen2. A combination of more instrumentation, larger string spacing, and enhancement of the optical sen ... More
Presented by Aya ISHIHARA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 099
The IceCube neutrino observatory is a 1 km^3 detector deployed in the ice at the South Pole. While it has observed an astrophysical flux of neutrinos, individual sources have yet to be identified. The high-peaked BL Lac object 1ES 1959+650 is an intriguing candidate. It exhibited an “orphan flare” in 2002: a TeV gamma-ray flare without a simultaneous X-ray flare, behavior that is hard to accom ... More
Presented by Thomas KINTSCHER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 167
We discuss the feasibility of the radar detection technique to probe high-energy neutrino induced particle cascades in ice. The properties of the plasma induced when a high-energy neutrino induced particle cascade traverses the medium are modeled in detail for random scattering geometries. This allows us to model the radar scattering cross-section, where previously our results were based on an emp ... More
Presented by Krijn D. DE VRIES on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 166
Recently the radar scattering technique to probe neutrino induced particle cascades in ice was investigated. The feasibility of this method was shown to crucially depend on several up to now unknown plasma properties, such as the plasma lifetime and the free charge collision rate. These parameters can be combined in an efficiency parameter for the radar scattering cross-section. We report on exper ... More
Presented by Krijn D. DE VRIES on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 175
KM3NeT is a large research infrastructure that will consist of a network of deep-sea neutrino telescopes in the Mediterranean Sea. The main scientific fields are neutrino astro-particle physics and earth and sea sciences. The former targets the study of astrophysical objects by detecting their high-energy neutrino emission and the investigation of neutrino properties by measuring atmospheric neutr ... More
Presented by Carlos Maximiliano MOLLO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 115
The IceCube neutrino observatory features a kilometer-cubed deep detector and a surface component, IceTop. IceTop consists of 162 ice-filled tanks equipped with optical sensors capable of detecting charged particles produced in air showers. While IceTop is well known for its cosmic-ray spectrum and mass composition measurements, it can also be used as a veto for IceCube. This role is becoming more ... More
Presented by Hershal PANDYA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 119
Cosmic rays interacting in the solar atmosphere can produce high energy neutrinos, which could be detected with IceCube. Neutrinos are produced through the decay of pions and kaons, similar to cosmic ray air showers in the Earth atmosphere. Due to the lower solar atmospheric density, the spectrum from the Sun is expected to be harder as mesons tend to decay before they can interact again or encoun ... More
Presented by Seongjin IN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 168
Following the first observation of an astrophysical high-energy neutrino flux with the IceCube observatory in 2013, planning for a next-generation neutrino detector at the South Pole, IceCube-Gen2, is under way, which will significantly expand the sensitivity both towards high and low neutrino energies. The detector is envisioned to instrument 5–10 cubic kilometers of the deep clear ice with up ... More
Presented by Lew CLASSEN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 135
EGADS (Evaluating Gadolinium’s Action on Detector Systems) is the successful prototype of the Super-Kamiokande Gadolinium project (SK-Gd), which consists in dissolving $0.2%$ of gadolinium sulfate in the pure water of the Super-K detector. EGADS is a 200 tons tank, filled with gadolinium dopped water, and designed as a miniature version of Super-K. Gadolinium has a high neutron capture cross-sec ... More
Presented by Guillaume PRONOST on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 106
The Baikal-GVD neutrino telescope is being constructed in lake Baikal. The robust Baikal Analysis and Reconstruction Software (“BARS”) has been developed to convert raw data into physics results. To provide a stable and uninterrupted analysis of all the data an automatic data processing using database is provided. The flexibility of the concept makes it easy to add new steps at any point of th ... More
Presented by Bair SHAYBONOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 139
The IceCube Neutrino Observatory has demonstrated the existence of an astrophysical high-energy neutrino flux with a significance exceeding seven sigma. Nevertheless, the observed astrophysical neutrino flux shows no clear association with any known source class so far. The most recent searches for point sources using seven years of data from IceCube have found no significant clustering of neutrin ... More
Presented by Juan Antonio AGUILAR SÁNCHEZ on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 107
Demonstration cluster “Dubna” has been deployed in April 2015 and operated up to February 2016 in Lake Baikal. It comprises 192 optical modules (OMs) arranged at 8 vertical strings at the depths from 930 m to 1275 m. We present here preliminary results of a search for cascade events induced by astrophysical neutrinos observed recently by IceCube using data sample corresponding to 41 live days ... More
Presented by Bair SHAYBONOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 109
The search for neutrino bursts from core collapse Supernovae at the Baksan Underground Scintillation Telescope is carried out since June 30, 1980. Background characteristics of the telescope allow us to search for neutrino bursts from Supernovae in a radius of 20 kpc, where 95% stars of our galaxy is contained. The current status of the experiment and results of the study of background events and ... More
Presented by Makhti KOCHKAROV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 136
The recent LIGO observation of gravitational waves from a binary black hole merger triggered several follow-up searches from both electromagnetic wave as well as neutrino observatories. Even though none of these searches led to a significant detection, it remains interesting to challenge the non-counterpart emission hypothesis, effectively stating that at the merger occurrence all surrounding matt ... More
Presented by Gwenhaël DE WASSEIGE on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 146
The work describes a data-driven trigger designed to detect neutrino signal from a galactic supernova using the NOvA detectors. Since the NOvA experiment is designed to measure neutrino oscillations in a $ u_{mu}$ beam with average energy of 2 GeV and has little overburden, detecting interacting 10's of MeV neutrinos from a supernova requires dedicated data selection and background reduction. Stud ... More
Presented by Andrey SHESHUKOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 171
Although cosmogenic neutrinos are expected to be produced in predominantly electron and muon flavors, neutrino mixing predicts that, upon arrival to Earth, tau neutrinos will will be found in equal ratios. The Auger Observatory is sensitive to air showers produced by tau-leptons from tau-neutrino interactions in the Earth and has produced one of the most restrictive limits. Recently, other experim ... More
Presented by Andrew ROMERO-WOLF on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 140
Blazars are active galactic nuclei that have their relativistic particle jet pointing towards Earth and have been observed to emit gamma rays up to very high energies. They are also candidates for the yet-unknown accelerators of ultra-high energy cosmic rays. In such a case, their gamma-ray emission might be associated with neutrinos produced by hadronic interactions in the jet. We describe here a ... More
Presented by Kevin MEAGHER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 174
KM3NeT/ORCA is a water-Cherenkov neutrino detector under deployment in the Mediterranean sea, off the shore of Toulon (France). The primary goal of ORCA is to measure the neutrino mass ordering by studying the angular and energy distributions of atmospheric neutrinos that cross the Earth. Such neutrinos undergo matter effects that modify the pattern of their oscillations, therefore also providing ... More
Presented by Veronique VAN ELEWYCK on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 162
A series of measurements has been started where the 14C concentration is determined from several liquid scintillator samples. A dedicated setup has been designed and constructed with the aim of measuring the 14C/12C ratio smaller than 10^-18. Measurements take place in the new low background laboratoty Callio Lab in the Pyhasalmi mine, Finland. Low-energy neutrino detection with a liquid scintilla ... More
Presented by Sultim LUBSANDORZHIEV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 142
Hyper-Kamiokande (Hyper-K) is a proposed next generation underground large water Cherenkov detector. We propose to build two cylindrical water tanks in our experimental period, filled with ultra pure water and surrounded with newly developed photo sensors. In total, it will provide the fiducial volume of 0.19-0.37 Mt. The energies, positions, directions and types of charged particles produced by n ... More
Presented by Takatomi YANO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 154
The Askaryan Radio Array (ARA) experiment uses radio antennas to detect the Askaryan emission from Ultra-High-Energy (above 10^16 eV) neutrino interactions in the ice in Antarctica. The understanding of the antenna properties, such as the gain and Voltage Standing Wave Ratio, is especially crucial for the energy determination of neutrino events, and the performance has be optimized for the maximum ... More
Presented by Simon ARCHAMBAULT on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 160
The recent discovery of high-energy astrophysical neutrinos and competitive measurements of neutrino oscillation parameters by IceCube motivate a next generation Antarctic neutrino observatory. IceCube-Gen2 is a proposed extension to the current IceCube detector, which uses the extremely clean Antarctic ice as detector medium. While intense calibration efforts with LED flashers have resulted in a ... More
Presented by MinJin JEONG on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 156
In the specific case of a km3 neutrino detector in a salt mine, cosmic neutrinos are observed indirectly by measuring the radio emission generated by their interaction with the salt. As waves propagate in a non ideal medium before being measured by radio antennas, it is impetuous to have first a good geophysical material description. The attenuation given by radio wave propagation will essentially ... More
Presented by Alina BADESCU on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 123
The search for magnetic monopoles with the ANTARES neutrino telescope is presented. These hypothetical particles carry only a magnetic charge. They would be created in the primordial Universe within the phase transition corresponding to the spontaneous breaking of the unified gauge group into subgroups, then would be accelerated by the Galactic magnetic fields and reach the Earth. Magnetic monopol ... More
Presented by Antoine KOUCHNER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 172
The planned extension of IceCube, a cubic-kilometer sized neutrino observatory, aims at increasing the rate of observed astrophysical neutrinos by up to a factor of 10. The discovery of a high energy neutrino point source is thereby one of its primary science goals. Improving the sensitivity of the individual modules is a necessity to achieve the desired design goal of IceCube-Gen2. A way of impro ... More
Presented by Achim STOESSL on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 130
Strange quark matter (SQM), consisting of roughly equal quantities of u, d and s quarks, was suggested to be the ground state of hadronic matter. SQM could be stable for baryon numbers A ranging from a few (ordinary nuclei) to 1e57 (neutron stars). Lumps of SQM may have survived as relics of the Big Bang or as debris of supernovae and may contribute to the cold dark matter content in the Universe. ... More
Presented by Thierry PRADIER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 132
We use a two point correlation analysis to look for inhomogeneities in the arrival directions of the high energy muon neutrino candidates detected by the ANTARES neutrino telescope. This approach is complementary to a point source likelihood-based search, which is mainly sensitive to one bright point like source and not to collective effects. We present the results of a search based on this two-po ... More
Presented by Bruny BARET on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 147
Neutrino is a new window to our universe since the observations of the Sun and SN1987A via neutrinos. Hyper-Kamiokande (Hyper-K) is a next generation neutrino telescope with excellent capabilities in particle physics. It consists of two identical water tanks (2x260 kton) with 40% photo coverage. With the 20 times larger fiducial volume than Super-Kamiokande, the sensitivities for Supernova burst a ... More
Presented by Dong Nyeok YEOM, Seon Hee SEO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 158
The previous neutrino telescopes located in the lake Baikal have been one of the key players in the field of detection of high-energy cosmic neutrinos for many decades. In April 2015, the first part of the newly constructed next-generation neutrino telescope, Gigatone Volume Detector (GVD), was put into operation in the lake Baikal and started to take data. Moreover, the substantial extension of t ... More
Presented by Lukáš FAJT on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 170
The Baikal-GVD neutrino telescope with an km3 scale detection volume is currently under construction at Lake Baikal. The telescope will be composed of functionally independent setups—clusters of strings of optical modules based on photomultiplier tubes (with eight strings in each cluster). First cluster of GVD in its baseline configuration was deployed in 2016. Spatial positions of light sensors ... More
Presented by Kirill GOLUBKOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 169
The Baikal-GVD is a cubic kilometer scale neutrino telescope which is deployed in Lake Baikal, that will perform neutrino astronomy studies. It consists of sub-arrays - clusters of about 300 optical modules each, that detect the Cherenkov light radiated by charged particles induced by a neutrino interactions with the surrounding medium. The performance of the neutrino telescope relies on the preci ... More
Presented by Kirill GOLUBKOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 128
The KM3NeT Collaboration is building two underwater neutrino detectors: ARCA, deployed at 3500 m depth in the Ionian Sea, offshore from Sicily, aiming at the measurement of cosmic neutrino signals and at the detection of astrophysical neutrino sources; ORCA, deployed at 2500 m depth, offshore from Toulon, south of France, aiming at the measurement of neutrino mass hierarchy. ARCA and ORCA use the ... More
Presented by Rosa CONIGLIONE on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 102
First results on the search for high energy neutrino emission in coincidence with very high energy (E>100 GeV) gamma-ray flares from two bright extragalactic sources, based on the data collected in 2014-2016 by the ANTARES neutrino detector and High Altitude Water Cherenkov (HAWC) gamma-ray observatory, are presented. The ANTARES telescope observes with high duty cycle an instantaneous field of vi ... More
Presented by Agustín SÁNCHEZ LOSA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 112
The discovery of astrophysical high-energy neutrinos with IceCube opened the window to neutrino astronomy. With the IceCube-Gen2 high-energy array, an extension that will surround the existing IceCube deep ice detector, the detection rate of cosmic neutrinos will be increased by about an order of magnitude. The main background of neutrino telescopes such as IceCube consists of muons that are produ ... More
Presented by Jan LÜNEMANN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 149
The radio technique has attracted attention as a next generation method for detection of astrophysical ultra-high energy neutrinos, and has continued to develop through experiments such as RICE, ANITA, ARIANNA, and ARA in Antarctica over the past a couple of decades. In this paper, we propose a new radio antenna array experiment dedicated to the detection of tau-neutrinos emerging from the nearby ... More
Presented by Jiwoo NAM on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 108
The search for astrophysical sources of muon neutrinos has been performed using experimental data of the Baksan Underground Scintillation Telescope (BUST) collected during 38 years, with live observational time 30.9 years. The BUST is an underground detector located at the Northern Caucasus (Russia). The BUST detect muon neutrinos from southern hemisphere and the most of the Galaxy is in the field ... More
Presented by Makhti KOCHKAROV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 150
IceCube reported the detection of PeV scale astrophysical neutrinos. The origin (Pevatron) has not been revealed yet. HESS also reported deep gamma-ray observations with arcminute angular reslution of the region surrounding the supermassive black hole Sgr A* at the Galactic Center. Combined detection of PeV neutrinos and gamma-rays from an accelerator provides indispensable identification of the l ... More
Presented by Makoto SASAKI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 131
KM3NeT is a distributed neutrino observatory in the abyssal site of the Mediterranean Sea. Each installation is based on a grid of thousands Digital Optical Modules (DOMs), interconnected to shore via an electro-optical seafloor infrastructure. The DOMs are organised in vertical structures, each one provided with a base-module for controlling the power supply and optical amplification of the attac ... More
Presented by Silvia CELLI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 178
A stable fast-spinning magnetar may be born from the coalescence of binary neutron stars. Unlike a neutron star formed from the core-collapse of a massive star, the magnetar is surrounded by a rather small quantity of mass ejected during the merger, and a large radiation field from the deposition of the magnetic spin-down. The pulsar magnetosphere provides promising sites for particle acceleration ... More
Presented by Ke FANG on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 148
Radio ice detectors for Ultra High Energy neutrinos take advantage of large natural ice sheets to detect the impulsive emission of radio signals. The Askaryan Radio Array (ARA) has deployed several prototype detectors at the South Pole. Using Monte Carlo simulations, we re-examine various design parameters of a neutrino detector at the South Pole. Along with the frequency acceptance of the detecto ... More
Presented by Ming-Yuan LU on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 165
Tau neutrino Astronomy appear to most authors the best roadmap to any neutrino astronomy. Indeed the recent decades of underground neutrino detectors, as Super Kamiokande and ICECUBE, have been up to now polluted by cosmic secondaries, mostly muons, of atmospheric nature. Indeed since the 2013 ICECUBE report of a sudden flavor change from a muon ruled one at TeV to a cascade signal at tens TeV hav ... More
Presented by Daniele FARGION on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 120
The IceCube Neutrino Observatory, located in the deep ice at the South Pole, is designed to observe neutrinos above 1 TeV. However, its scaler system is highly sensitive to low-energy neutrinos from a Galactic Core Collapse supernova (CCSN). SNDAQ, an online trigger system designed to observe CCSNe neutrino bursts in real time, is running in the detector with 99% uptime. In its current implementat ... More
Presented by Robert CROSS on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 105
IceCube-Gen2 is under design, including its Phase-1 detector upgrade dedicated to the study of the unitarity matrix via a precise detection of $nu_tau$ appearance and an improved reconstruction of high energy shower events for astrophysical source searches. A new level of precision is needed in order to guarantee improved performance with respect to IceCube. An improved calibration system will ena ... More
Presented by Elisa RESCONI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 179
The Cosmic-Ray Extremely Distributed Observatory (CREDO) is an infrastructure for global analysis of extremely extended cosmic-ray phenomena, so-called super-preshowers, beyond the capabilities of existing, discrete, detectors and observatories. To date cosmic-ray research has been focused on detecting single air showers, while the search for ensembles of cosmic-ray events induced by super-pre ... More
Presented by Kevin CHEMINANT on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 181
The ability to communicate with all audiences is a skill that is rapidly becoming a must-have for any future scientist. As more physicists engage in communicating science to non-expert audiences, research shows that this experience helps them to get a better understanding of their own research and the impact on society, improves the perception of science by lay audiences and can also become an ... More
Presented by Jef VAN LAER, Gwenhaël DE WASSEIGE on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 180
This poster will provide an overview of the robust program carried out by the international IceCube Neutrino Observatory to engage and inform the public. Activities range from one-time talks and posts on social media to field deployments to the South Pole for high school teachers. Four successful ongoing efforts will be featured. A high school masterclass, offered for the fourth time this spring, ... More
Presented by Elisha FEITLINGER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 072
The Sun is an effective particle accelerator producing solar energetic particle (SEP) events during which particles up to several GeVs can be observed. Those events observed at Earth with the neutron monitor network are called ground level enhancements (GLEs). In this work, SEP events with protons accelerated to above 500 MeV have been identified using data from the Electron Proton Helium Instrume ... More
Presented by Patrick KUEHL on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 060
It was shown that cosmic rays through the air ionization can have an effect on the aggregate passages of water in the free atmosphere, and thereby have an effect on the changes of atmospheric parameters. Estimations of changes of the pressure from the experimental set of data by measurements of the water count in the cut of the atmosphere are presented. By these estimations, the value of possible ... More
Presented by Lev TIMOFEEV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 063
The aim of this work is comparative study the long term variation in third and fourth harmonics of cosmic ray intensity on sixty quietest days in a year using the data of equatorial and mid -latitude neutron monitoring stations. It has been observed that in spite of the abrupt variation in the amplitude and phase of third harmonic of cosmic ray intensity, the amplitude of third harmonic is relativ ... More
Presented by Mahendra Kumar RICHHARIA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 033
Diffusive shock acceleration (DSA) as an acceleration mechanism for galactic electrons at the solar wind termination shock (TS) is investigated with a numerical model describing shock-acceleration and drift-modulation in the heliosphere. It is known from our previous work that the efficiency of DSA depends on the shape of electron spectra incident on the TS, which in turn depends on the features o ... More
Presented by Marius POTGIETER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 032
The propagation and modulation of electrons in the heliosphere play a significant role in improving our understanding and assessment of the processes of solar modulation. A locally developed, full three-dimensional, numerical model is used to study the total modulation of Jovian and galactic electrons from 1 MeV to 50 GeV, and from the Earth into the heliosheath. For this purpose the Jovian electr ... More
Presented by Marius POTGIETER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 061
The evolution of galactic proton, electron and positron intensities measured by the PAMELA mission at the Earth from 2006 to 2015 is studied with a time-dependent numerical model that incorporates the time-dependence of the drift and diffusion coefficients. With the heliopause spectra, or local interstellar spectra, of low energy galactic electrons and protons now established, together with recent ... More
Presented by Mabedle Donald NGOBENI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 097
We studied proton spectra and cosmic-ray (CR) anisotropy for the 2012 May 17 ground-level enhancement event (GLE71), the first event in Cycle 24, from ground-based observations of cosmic rays, by using the worldwide network of stations and spacecrafts and a method of spectrographic global survey. We showed rigidity spectra and relative variations in the CR intensity with rigidities of 2 GV in the ... More
Presented by Valery SDOBNOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 098
From measurements of cosmic rays at the world network of stations, we calculated the variations in the planetary system of geomagnetic cutoff rigidity during the 2015 March moderate geomagnetic storm. Within the axisymmetric model for the restricted Earth magnetosphere taking into account the currents at the magetopause and the ring current, determined was the distance to the subsolar point and th ... More
Presented by Valery SDOBNOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 089
The effects of modifying the heliospheric magnetic field (HMF), particularly in the polar regions of the heliosphere, are illustrated by utilizing a numerical model based on the solution of a set of stochastic differential equations (SDEs). Because SDE-based models are especially well suited for such studies, we are able to gain new insights into this subject. The differences in the modulation bro ... More
Presented by Jan-Louis RAATH on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 088
The solar modulation of cosmic rays has increasingly been studied by utilizing numerical modulation models based on the solution of an appropriate set of stochastic differential equations (SDEs). We apply such a SDE-based model to study the modulation effects of the wavy heliospheric current sheet (HCS), in particular as its waviness increases with solar activity up to extreme maximum conditions. ... More
Presented by Jan-Louis RAATH on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 019
A new model of the CRAC family, CRAC:EPII (Cosmic Ray Atmospheric Cascade: Electron Precipitation Induced Ionization) is presented. The model allows one to calculate atmospheric ionization induced by precipitating electrons. The model is based on pre-computed high-precision ionization yield functions, which are obtained using full Monte Carlo simulation of electron propagation and interaction in t ... More
Presented by Alexander MISHEV, Anton ARTAMONOV, Genady KOVALTSOV, Irina MIRONOVA, Ilya USOSKIN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 018
Purpose. We analyze the data of multi-wavelength observations of extreme solar particle events. In such events, protons are accelerated to relativistic energies and can cause a significant signal even in the ground-based particle detectors. We consider a pair of extreme particle events, the events of 2 May 1998 and 2 November 2003, to reveal their production scenario and origins at/near the Sun. M ... More
Presented by Alexander MISHEV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 084
Here we report the characteristics of global shallow-source seismicities associated with solar activities in different time scales during the past 10 solar cycle periods (1902-2008). By using Lomb-Scargle spectrum analyses, about 11 years period exists in the number of earthquakes (4≤M<5, about 190,000 earthquakes). In decadal time scale, higher number and released energy from earthquakes occurr ... More
Presented by Xiao Xia YU on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 034
The Carpet cosmic ray detector was constructed at the Lebedev Physical Institute of the Russian Academy of Sciences (Moscow, Russia) within the scope of international scientific cooperation between the Eurasian National University (Astana, Kazakhstan) and the Lebedev Physical Institute RAS. The cosmic ray detector was placed into operation at Faculty of Physics and Technical Sciences of the Eurasi ... More
Presented by Aidar МORZABAEV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 045
We report on the capabilities of the HAWC instrument to detect and measure Forbush Decrease (FD). The High Altitude Water Cherenkov (HAWC) Gamma Ray observatory sits on the flanks of the Sierra Negra volcano near Puebla, Mexico at an altitude of 4100 meters above the sea level at a geomagnetic cutoff of 8.5 GV. It is a ground-based TeV gamma-ray telescope that relies on extensive air showers produ ... More
Presented by Eduardo TIRADO on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 086
Solar activity has an important impact not only on the intensity of cosmic rays but also on the environment of the Earth. In the present paper, a coupled oscillator model is proposed in order to explain solar activity. Using this model the 89-year Gleissberg cycle can be naturally reduced. Furthermore, as an application of the coupled oscillator model, we attempt to apply the proposed model to the ... More
Presented by Yasushi MURAKI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 070
The processes responsible for the effective longitudinal transport of solar energetic particles (SEPs) are still not completely understood. We address this issue by simulating SEP electron propagation using a spatially 2D transport model that includes perpendicular diffusion. By implementing, as far as possible, theoretically derived forms of the transport (diffusion) coefficients, we compare our ... More
Presented by Nicholas Eugene ENGELBRECHT on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 055
We study the temporal intensity prole, or pulse shape, of cosmic ray ground level enhancements (GLEs) by calculating the rise (tr) and decay (td) times for a small subset of all available events. Although these quantities show very large inter-event variability, a linear dependence of td~3.5tr is found. We interpret these observational findings in terms of an interplanetary transport model, thereb ... More
Presented by Helena KRUEGER on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 029
Recent direct in-situ measurements of the cosmic ray flux and its energy spectrum during the solar minimum, 2006–2009, a period of record high cosmic ray, by PAMELA space-borne spectrometer and appearance of the new-generation neutron monitor yield function have necessitated the new reconstruction of the heliospheric modulation potential. We compare the modern models of the local interstellar sp ... More
Presented by Agnieszka GIL on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 054
In the paper results of on-board data from different spacecrafts and different orbits during different solar proton events in 24th solar cycle for several years are presented. Data from spectrometers placed onboard Russian spacecrafts Electro-L and Meteor-M, functioning at geostationary and polar orbits correspondingly are used, and also free access data from GOES and POES are used. Solar proton f ... More
Presented by Grigory PROTOPOPOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 028
We recognized in amplitudes of the 27-day variation of the galactic cosmic rays intensity, as well as in solar activity (SA) parameters and solar wind (SW) properties appears quasi-recurrence with duration of 3 to 4 Carrington rotations period (3-4 CRP). We attribute this phenomenon to the presence of a spatial topological structure (STS) of the magnetic field lines. The STS is created by the α ... More
Presented by Agnieszka GIL on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 017
Predictions of the irregularity in the 11 year heartbeat of the sun due to asynchronous of the two layered dynamo effect would result in mini ice age as in the Maunder minimum. The onset of this event is expected in the beginning of 25th solar cycle and would go to its maximum in the 26th solar cycle . The minimum temperature is expected in 2028 due to the fall of solar activity by 60 % termed as ... More
Presented by Rajiv KUMAR on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 073
Only three Ground Level Enhancements (GLEs) produced by GeV-range solar energetic particles have been confirmed in the present solar cycle, and those have been quite small by historical standards. At the same time direct observations of high energy solar particles from spacecraft have become available. The combination of instruments at the Amundsen – Scott Station at the geographic South Pole of ... More
Presented by Paul EVENSON on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 010
In this study, the relationship between the cosmic ray muons and the atmospheric temperature at low stratosphere have been investigated and established. Cosmic ray data from KACST muon detector (Rc= 14.4 GV) and radiosonde measurements from Riyadh airport have been used for this purpose. We have found that the temperature at the lower stratosphere is correlated with the cosmic ray muons detected a ... More
Presented by Abdullrahman MAGHRABI on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 036
In this study we analyze the observations with the Mini Neutron Monitor (miniNM) located at Sierra Negra, Mexico. This relatively new cosmic-ray detector is the mobile versión of the standard NM64. There are about seven of these instruments around the world. The miniNM at Sierra Negra is the highest loctated miniNM (4100 m a.s.l.), and with the cutoff rigidity of approximately 8.5 GV. It is in th ... More
Presented by Alejandro LARA on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 082
We present the first results of the analysis of cosmic ray variations observed by ground-based CARPET (KOVER) cosmic ray detectors in 2016. These detectors were constructed on basis of a set of Geiger counters and were installed at locations with different geomagnetic cutoff rigidities, i.e. at Astronomical Complex CASLEO (Argentina; S31.62, W69.28), at the P.N. Lebedev Physical Institute (Moscow, ... More
Presented by Vladimir MAKHMUTOV on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 011
An extension of the previous version of the CRAC model - CRAC:HEPII (Cosmic Ray Atmospheric Cascade: High Energy Proton Induced Ionization) is presented. The model allows one to compute the ion production by high energy protons entering the Earth's atmosphere. The model is an extension of the CRAC:CRII model and it is focused on the mesosphere and the upper part of the stratosphere, but is applica ... More
Presented by Ilya USOSKIN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 012
Ground Level Enhancements (GLEs) recorded by neutron monitor detectors are characterized by a variety of energy spectra of solar energetic particles (SEP), which vary between soft (as in August 1972) and hard (February 1956). The aim of this work is to investigate the statistical relation between the hardness of the energy spectra and the event-integrated intensity. We calculated the event-integra ... More
Presented by Ilya USOSKIN on 15/7/2017 at 6:00
Session: Poster & Coffee
Board #: 030
Since 2014 the detector system SEVAN (Space Environmental Viewing and Analysis Network) is in operation along with the neutron monitor at Lomnický štít (LS, 2634 m asl). In the first part, we discuss the atmospheric corrections of the three channels of SEVAN. We present the events with short duration enhancements observed in the first channel of SEVAN during the periods of thunderstorms activit ... More
Presented by Mária KANCÍROVÁ on 15/7/2017 at 6:00