12-20 July 2017
BEXCO
Asia/Seoul timezone
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NU(Neutrino Astronomy)

Place

Location: BEXCO
Address: BUSAN, KOREA
Date: from 13 Jul 13:30 to 20 Jul 15:30

Conveners

  • 20 Jul 14:45 - 15:30
    • Ackermann, Markus

Timetable | Contribution List

Displaying 57 contributions out of 57
NU
on 20/7/2017 at 5:45
We propose that TeV-PeV neutrinos, recently detected by the IceCube, can be produced by neutrons interacting with the matter of the accretion disks around black holes in active galaxies. Neutrons are extracted from nuclei which are disintegrated in jets of active galaxies. The neutrino spectra, expected from the whole population of the active galaxies, are confronted with the observations. We prop ... More
Presented by Wlodek BEDNAREK on 13/7/2017 at 8:30
According to recent reports, lower mantle can preserve more water than previous assumption. Hydrogen is gathering attention as the light element of the outer core. But hydrogen content in the deep Earth cannot be measured directory with the present technology. On the other hand, the recent remarkable progress of the high pressure experiment enabled to reproduce the deep Earth pressure-temperature ... More
Presented by Akimichi TAKETA on 15/7/2017 at 5:30
Gamma-ray bursts (GRBs) are among the most energetic events known in the Universe, which perhaps are the source of neutrino emission. With Borexino data taken from December 2007, three different searches for GRB emitted neutrinos were delivered. First, search for electron antineutrinos with energies from 1.8 MeV to 15 MeV correlated with GRBs was performed through inverse beta decay channel on pro ... More
Presented by Koun CHOI on 14/7/2017 at 8:00
Super-Kamiokande is the world-largest water Cherenkov detector, running for neutrino observations and proton decay search over 20 years. Because of its high statistics due to the large fiducial volume of 22.5 kt, lower cosmic-ray background environment in a mine at 1000m underground, and well-calibrated detector itself, Super-K has been making the world-leading results of the Boron-8 solar neutrin ... More
Presented by Takatomi YANO on 15/7/2017 at 4:30
When a cosmic particle hits matter it produces radio emission via the Askaryan effect. This allows to use Earth's moon as detector for cosmic particles by searching for these ns-pulses with radio telescopes. This technique potentially increases the available collective area by several orders of magnitude compared to current experiments. The LOw Frequency ARray (LOFAR) is the largest radio telescop ... More
Presented by Tobias WINCHEN on 17/7/2017 at 5:00
We discuss the link between high energy gamma-ray emitting blazars, very high energy neutrinos, and ultra high energy cosmic rays using the IceCube neutrinos as a filter to gamma-ray catalogues. The neutrino filtered emitters are investigated through a correlation analysis based on a likelihood method with the ultra high energy cosmic rays from the Pierre Auger Observatory and the Telescope Array ... More
Presented by Elisa RESCONI on 17/7/2017 at 8:45
The IceCube Neutrino Observatory instruments more than a cubic kilometre of the deep glacial ice below South Pole Station, Antarctica, creating the largest water Cherenkov detector. With the addition of a low energy detection array, DeepCore, completed in 2010, the observatory is sensitive to neutrinos with energies between ~10 GeV and the EeV scale. IceCube has now accumulated the world's largest ... More
Presented by Tania WOOD on 14/7/2017 at 7:45
We present results of the first four Swift satellite follow-up campaigns seeking to identify transient or variable X-ray or UV/optical sources that might be associated with individual high-energy cosmic neutrinos detected by the IceCube Neutrino Observatory. Real-time public alerts providing coordinates and arrival times of likely-cosmic neutrinos have been provided by IceCube, via the Astrophysic ... More
Presented by Azadeh KEIVANI on 17/7/2017 at 8:30
Radio detectors for UHE neutrinos, such as ARA, ARIANNA, and ANITA, look for the broadband, impulsive radio emission produced by a neutrino-induced particle shower in a dense dielectric. An interferometric phased array trigger, in which signals from multiple antennas are added coherently before triggering to increase the signal-to-noise ratio for triggering, can be implemented to lower the energy ... More
Presented by Abigail VIEREGG on 14/7/2017 at 5:15
The origins of high-energy astrophysical neutrinos measured by the IceCube Neutrino Observatory remain a mystery despite extensive searches for multimessenger correlations. In particular, no point sources have been identified so far. However a likely source for diffuse neutrino emission are cosmic-ray interactions in the galactic plane. Due to the excellent pointing of their track-like signature, ... More
Presented by Christian HAACK on 15/7/2017 at 9:15
Since the end of the eighties and in response to a reported increase in the total neutrino flux in the Homestake experiment in coincidence with solar flares, solar neutrino detectors have searched for solar flare signals. Hadronic acceleration in the magnetic structures of such flares leads to meson production in the solar atmosphere. These mesons subsequently decay, resulting in gamma-rays and ne ... More
Presented by Gwenhaël DE WASSEIGE on 14/7/2017 at 9:15
The IceCube Neutrino Observatory is a cubic kilometer neutrino telescope located at the geographic South Pole which can observe neutrinos at energies from GeV to above a PeV. Now that IceCube has realized its primary goal, the detection of high-energy astrophysical neutrinos, the task remains to identify the sources of these neutrinos. Observing neutrinos in coincidence with transient astrophysica ... More
Presented by Kevin MEAGHER on 17/7/2017 at 8:00
ORCA (Oscillations Research with Cosmics in the Abyss) is the low-energy branch of KM3NeT, the next generation underwater Cherenkov neutrino detector in the Mediterranean. Its primary goal is to resolve the long-standing unsolved question of whether the neutrino mass ordering is normal or inverted by measuring matter oscillation effects with atmospheric neutrinos. The ORCA design foresees a dense ... More
Presented by Antoine KOUCHNER on 15/7/2017 at 5:00
The IceCube observatory, located at the South Pole has been completed in 2010 and is the largest neutrino detector in the world. PeV neutrinos have been discovered in previous analyses which were optimised for different event topologies. A new search has been developed to select PeV cascades that are not fully contained in the detector. It is therefore sensitive to the Glashow resonance at 6.3 PeV ... More
Presented by Lu LU on 15/7/2017 at 8:45
KM3NeT/ORCA is a mega-ton volume neutrino detector and has entered the construction phase in the Mediterranean Sea. Optimised to study neutrino oscillations in the few GeV energy range, it has unprecedented sensitivity to oscillations of atmospheric muon and electron neutrinos into the tau neutrino channel. Tau neutrinos predominantly produce shower-like signatures, which can be identified on a st ... More
Presented by Steffen HALLMANN on 15/7/2017 at 5:15
The KM3NeT Collaboration started the construction of a research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ARCA telescope, currently being constructed at the Italian site, will be devoted to the observation of high-energy cosmic neutrinos both in diffuse and point source mode. The existence of cosmic neutrinos is nowadays ... More
Presented by Rosa CONIGLIONE on 15/7/2017 at 8:30
Neutrino Experiment for Oscillation at Short baseline (NEOS) targeted the search of singlet neutrinos as natural extension to Standard Model three neutrinos. The electron antineutrinos emerging from a reactor of 2.8-GW thermal power were detected in tendon gallery, 24 meters away from the reactor core. The experiment was performed at Hanbit Nuclear Power Plant in Young-Gwang, Korea for eight month ... More
Presented by Siyeon KIM on 15/7/2017 at 5:45
The Giant Radio Array for Neutrino Detection (GRAND) aims at detecting ultra-high-energy extraterrestrial neutrinos via the extensive air showers induced by the decay of tau leptons created in the interaction of neutrinos under the Earth's surface. Consisting of an array of ~10^5 radio antennas deployed over ~2x10^5 km^2, GRAND plans to reach, for the first time, a sensitivity of ~5x10^-11 GeV cm^ ... More
Presented by Ke FANG on 14/7/2017 at 5:45
The primary flux model for the calculation of atmospheric neutrino is renewed based on the AMS02 observation of primary cosmic rays. With new cosmic ray spectra model, the interaction model is also studied again, so that it reproduce the observed muon flux accurately. Then, we applied the primary cosmic ray flux model and the interaction model to the calculation of atmospheric neutrino flux. In th ... More
Presented by Morihiro HONDA on 13/7/2017 at 7:45
IceCube-Gen2 is planned to extend the IceCube Neutrino Observatory at the geographic South Pole. For neutrino astronomy, a large sample of well-reconstructed astrophysical neutrinos with very low background is essential. The main background for this signal consists of muons and neutrinos, which are produced in cosmic-ray air showers in the Earth's atmosphere. The coincident detection of these air ... More
Presented by Jan AUFFENBERG on 13/7/2017 at 5:15
The ANTARES detector is the largest neutrino telescope in the Northern Hemisphere. Interactions of all neutrino flavours can be observed and reconstructed with good resolution. The track channel – events induced by muon neutrino charged-current interactions – allows to increase the effective detector volume by the long path travelled by muons in rock and seawater, with excellent angular resolu ... More
Presented by Thomas EBERL on 15/7/2017 at 8:15
The IceCube Neutrino Observatory is a cubic-kilometer Cherenkov telescope buried in the ice sheet at the South Pole that detects neutrinos of all flavors with energies from tens of GeV to several PeV. The instrument provided the first measurement of the flux of high-energy astrophysical neutrinos, opening a new window to the TeV universe. Here we present design studies for IceCube Gen2, the next-g ... More
Presented by Jakob van SANTEN on 13/7/2017 at 5:00
Fast Radio Bursts are one of the most intriguing transient radio sources. Discovered a decade ago, they are characterised by an intense radio-pulse (few Jy) lasting few milliseconds and mainly detected in the GHz energy band. Up to now, many unknowns remain concerning the nature of the transient progenitor, the nature of the radio emission and their distribution in the Universe. Recently, the firs ... More
Presented by Matteo SANGUINETI on 14/7/2017 at 8:45
ANTARES is the largest operational neutrino telescope in the Northern hemisphere, located in the deep water of the Mediterranean Sea, offshore Toulon. One of its main scientific goals concerns the identification of hadronic astrophysical accelerators through the detection of high-energy neutrinos. Among these sources, Gamma-Ray Bursts (GRBs) constitutes promising candidates because they are the mo ... More
Presented by Silvia CELLI on 14/7/2017 at 8:15
A search for cosmic neutrino sources using the data collected with the ANTARES detector between early 2007 and the end of 2015 is presented. For the first time, all neutrino interactions are considered in a search for point-like sources, instead of only muon neutrino charged current interactions. This is achieved by using a novel reconstruction algorithm for shower-like events in addition to the s ... More
Presented by Giulia ILLUMINATI on 14/7/2017 at 9:00
High-energy neutrinos could be produced in the interaction of charged cosmic rays with matter or radiation surrounding astrophysical sources. Transient phenomena, such as gamma-ray bursts, core-collapse supernovae or active galactic nuclei are promising candidates to emit high-energy neutrinos. To search for coincidences between a transient event and a neutrino emission, a follow-up program of neu ... More
Presented by Damien DORNIC on 17/7/2017 at 8:15
The spectrum of cosmic rays includes the most energetic particles ever observed. The mechanism of their acceleration and their sources are, however, still mostly unknown. Observing astrophysical neutrinos can help solve this problem. Because neutrinos are produced in hadronic interactions and are neither absorbed nor deflected, they will point directly back to their source. This contribution will ... More
Presented by Claudio KOPPER on 15/7/2017 at 7:45
Fast radio bursts (FRBs) are non-periodic millisecond radio outbursts that are thought to be of astrophysical origin. Since the first FRB was discovered by the Parkes Radio Telescope in 2007, a total of 43 FRBs with 18 unique locations (one burst has repeated 25 times) have been observed to date, with the Green Bank and Arecibo radio telescopes adding to the discovery facilities. Although the natu ... More
Presented by Donglian XU on 14/7/2017 at 8:30
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 Christopher PERSICHILLI
The spectral shape and flavor composition of the high-energy astrophysical neutrino flux can contain important information about the sources and processes which produce it. The IceCube Neutrino Observatory has previously demonstrated the ability to observe neutrinos of all flavors by selecting events which interact within the detector volume. Sensitivity to charged current muon neutrino interactio ... More
Presented by Christopher WEAVER on 15/7/2017 at 8:00
This paper presents a method, based on nine years of recorded IceCube data, for calculating the quasi-differential upper limits of the extremely high energy (EHE) neutrino flux in the presence of an unknown astrophysical neutrino flux and the resultant differential upper limit. A complete frequentist approach to calculate a differential limit is developed. The Poisson binned likelihood method is i ... More
Presented by Shigeru YOSHIDA on 17/7/2017 at 5:30
The IceCube Neutrino Observatory at the geographic South Pole is a cubic kilometer Cherenkov detector built to measure high-energy neutrinos from cosmic sources. It has reported a diffuse flux of TeV-PeV astrophysical neutrinos consistent with a neutrino flavor ratio of 1:1:1 as expected from pion decay in astrophysical sources after propagation to Earth. However, no tau neutrino has been identifi ... More
Presented by Marcel USNER on 17/7/2017 at 7:30
The Pierre Auger Observatory has been used to search for neutrinos of energy exceeding 100 PeV by looking for inclined showers that develop deep in the atmosphere. Neutrinos of any flavor interacting deeply in the atmosphere and triggering the Auger surface detector can be identified provided their zenith angles exceed 60 degrees. Also tau neutrinos that enter the Earth's crust with a zenith angle ... More
Presented by Enrique ZAS on 17/7/2017 at 5:15
ANTARES is currently the largest neutrino telescope operating in the Northern Hemisphere, aiming at the detection of high-energy neutrinos from astrophysical sources. Such observations would provide important clues about the processes at work in those objects, and possibly help to understand the origin of very high-energy cosmic rays. By design, neutrino telescopes constantly monitor at least one ... More
Presented by Agustín SÁNCHEZ LOSA on 17/7/2017 at 7:45
The proposed Hyper-Kamiokande (Hyper-K) is a next generation underground large water Cherenkov (WCh) detector. It has a broad program of physics and astrophysics mainly focusing on the precise measurement of the lepton mixing matrix and the leptonic CP asymmetry. Hyper-K will act as a far detector to measure the oscillated neutrino flux from the long-baseline neutrino experiment using 0.6 GeV neut ... More
Presented by Evangelia DRAKOPOULOU on 13/7/2017 at 4:30
One of the primary science foci of the IceCube experiment is measuring the flux of high-energy extraterrestrial neutrinos. Its spectral and flavor characteristics contain valuable information about astrophysical sources and production mechanisms. We analyzed four years of IceCube data recorded from 2012-2015 focusing on neutrino-induced cascades. Cascades stem predominantly from electron and tau n ... More
Presented by Hans NIEDERHAUSEN on 15/7/2017 at 7:30
The Askaryan Radio Array (ARA) is an ultra-high energy neutrino telescope aiming to discover and determine the cosmic neutrino flux above ~100PeV. Under phased construction near the South Pole, ARA achieves the sensitivity through the detection of Askaryan emissions from neutrino-induced showers in the Antarctic ice using radio frequency antennas (150-850MHz). Two ARA stations at a design depth of ... More
Presented by MING-YUAN LU on 17/7/2017 at 4:30
High-energy neutrinos, being neutral and weakly interacting particles, are powerful probes into the sites of production and acceleration of cosmic rays. Overcoming the challenges of their detection, the discovery of cosmic neutrinos by the IceCube Collaboration has moved the field one step closer to realizing the potential of neutrino astronomy. Meanwhile, ground-based cosmic-ray detectors like th ... More
Presented by Imen AL SAMARAI on 17/7/2017 at 9:00
We study the frequently used assumption in multi-messenger astrophysics that the gamma-ray and neutrino fluxes are directly connected because they are assumed to be produced by the same photohadronic production chain. An interesting candidate source for this test is the flat-spectrum radio quasar PKS B1424-418, which recently called attention of a potential correlation between an IceCube PeV-neutr ... More
Presented by Shan GAO on 13/7/2017 at 8:15
Neutrino stacking analysis constrain the paradigm that Gamma-Ray Bursts (GRBs) are the sources of the Ultra-High Energy Cosmic Rays (UHECRs). However, most of the literature has focused on a pure proton composition of UHECRs, which has been disfavored by recent composition measurements of the Pierre Auger Observatory. The injection of nuclei in the sources is here considered by simulating the nucl ... More
Presented by Denise BONCIOLI on 13/7/2017 at 8:00
Super-Kamiokande (SK) will be upgraded, to become SuperK-Gd, in order to be able to detect thermal neutrons. This will be achieved by dissolving 0.2% of gadolinium (Gd) sulfate in the otherwise ultra-pure SK water. Gd has the largest cross-section for thermal neutron capture and emits a gamma cascade of about 8 MeV. This cascade is detected with much higher efficiency than the capture on protons w ... More
Presented by Lluis MARTI-MAGRO on 13/7/2017 at 4:45
Recent measurements of the horizontal propagation properties of radio pulses through stratified polar firn indicate that surface detectors can observe signals from neutrino interactions throughout a much larger volume than previously considered. The evidence for horizontal propagation will be briefly summarized. Motivated by this new opportunity, the ARIANNA simulation tool to assess performance w ... More
Presented by Steve BARWICK on 14/7/2017 at 5:00
We propose a highly predictive framework of minimal seesaw model where leptogenesis can originate from leptonic CP violating phases measureable in low energy experiments. We examine the implication of current neutrino data on leptogenesis realized in the scheme we consider. We also discuss how lepton flavor violating processes and neutrinoless double beta decay can be correlated with leptogenesis. ... More
Presented by Sin Kyu KANG on 13/7/2017 at 8:45
Atmospheric leptons are of continuous interest for several scientific communities. At low and intermediate energies, atmospheric neutrinos are the signal for studies of fundamental neutrino properties and at high energies, they constitute the background for the characterization of the features of the astrophysical neutrino flux. We have studied in depth the relation between observable inclusive le ... More
Presented by Anatoli FEDYNITCH on 13/7/2017 at 7:30
A measurement of the atmospheric muon flux was performed using the first two KM3NeT DUs (Detection Units). It shows the distinctive decrease of the muon flux with increasing depth. This is both a physics result, confirming and constraining the atmospheric muon flux at the KM3NeT site, and a demonstration of the self-calibrating properties of the KM3NeT detector. The DUs are positioned at a depth o ... More
Presented by Martijn JONGEN on 13/7/2017 at 5:45
The ANITA (ANtarctic Impulsive Transient Antenna) is a NASA long-duration balloon payload with an array of radio antennas. The primary goal of ANITA is to search for ultra-high energy cosmogenic neutrinos by detecting their impulsive radio signals emitted via the Askaryan effect in the Antarctic ice sheet. Moreover, ANITA is able to detect radio impulses produced from ultra-high energy cosmic-ray ... More
Presented by Jiwoo NAM on 14/7/2017 at 5:30
By using clear, liquid water as detection medium, the KM3NeT Neutrino detector currently under construction in the Mediterranean Sea will be able to study the high energy neutrino sky with an unprecedented resolving power for each neutrino flavour. Simulations, and validation in the ANTARES detector, both show that the degree-level resolution for cascade events will be achieved, opening up the pos ... More
Presented by Karel MELIS on 13/7/2017 at 5:30
Askaryan Radio Array (ARA) is being built at the South Pole aiming for observing high energy cosmogenic neutrinos above 100 PeV. The ARA detector identifies the radio emissions from the excess charge in a particle shower induced by a neutrino interaction. Such a radio emission was first predicted by Askaryan in 1962 and experimentally confirmed by Saltzberg et al. using the SLAC accelerator in 200 ... More
Presented by Keiichi MASE on 14/7/2017 at 4:45
The ANTARES Neutrino Telescope can determine the arrival direction of a muonic High Energy Neutrino (HEN) with a precision well below 1° above 10 TeV. The detection of such a HEN in coincidence with a Gravitational Wave (GW) event would then improve the localization of the GW source, facilitating the search for electromagnetic counterparts. The results of such targeted HEN searches for the 3 GW e ... More
Presented by Thierry PRADIER on 17/7/2017 at 9:15
Hyper-Kamiokande is a next generation underground water Cherenkov detector, based on the highly successful Super-Kamiokande experiment. It will serve as a far detector, 295~km away, of a long baseline neutrino experiment for the upgraded J-PARC beam. It will also be a detector capable of observing --- far beyond the sensitivity of the Super-Kamiokande detector --- proton decay, atmospheric neutrin ... More
Presented by Stephane ZSOLDOS on 15/7/2017 at 4:45
Baikal-GVD is a kilometer scale neutrino telescope under construction in Lake Baikal, which will be formed by multimegaton subarrays – clusters of strings. First demonstration cluster “Dubna” has been deployed in 2015 and comprises 192 optical modules (OMs). In 2016 cluster “Dubna” was upgraded to baseline configuration which comprises 288 OMs arranged at eight strings. The second full s ... More
Presented by Vadimir AYNUTDINOV on 14/7/2017 at 7:30
The measurements of astrophysical neutrinos by the IceCube collaboration are consistent with an isotropic flux but also contain some indications of a North/South asymmetry which could hint a Galactic contribution. The ANTARES neutrino telescope has a direct view of the Galactic Center region and can provide complementary information on the neutrino flux from this region thanks to its excellent ang ... More
Presented by Bruny BARET on 15/7/2017 at 9:00
The Askaryan Radio Array (ARA) operates two stations (ARA-2, ARA-3) each with 16 antennas deployed on the corners of a cuboid at depths of 175-200 m at South Pole. The antennas are sensitive to either vertical (8 antennas) or horizontal (8 antennas) polarized radiation arriving from in-ice neutrino-induced cascades. At the time of IceCube construction, two calibration pulsers were deployed at a de ... More
Presented by Ming-Yuan LU on 14/7/2017 at 4:30
In this work we present a detailed study of the high-energy neutrino flux expectation from the Central Molecular Zone (CMZ) considering different possible hadronic contributions. The TeV gamma-ray observations from the dense molecular clouds and supernovae remnants (SNRs) contained in this region, suggest a careful modeling of this guaranteed neutrino factory. We consider a recently introduced cos ... More
Presented by Antonio MARINELLI on 13/7/2017 at 9:00
Since 2013 ICECUBE cascade showers sudden overabundance have shown a fast flavor change above 30-60 TeV up to PeV energy. This flavor change from dominat muon tracks at TeVs to shower events at higher energies, has been indebted to a new injection of a neutrino astronomy. However the recent published 54 neutrino HESE, high energy starting events, as well as the 38 external muon tracks made by trou ... More
Presented by Daniele FARGION on 13/7/2017 at 9:15
ANITA is a NASA balloon-borne radio (200-1200 MHz) interferometer for detecting radio transients from ultra-high energy particle showers. The first flight of ANITA detected impulses due to extensive air showers identified by the correlation of the radio polarization vector with the geomagnetic field. Thirteen air shower events were detected as reflections off the ice, classified as downward-pointi ... More
Presented by Andrew ROMERO-WOLF on 17/7/2017 at 4:45
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