12-20 July 2017
BEXCO
Asia/Seoul timezone
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Contribution

BEXCO - Room D(108)

[NU052] Search for muon neutrinos from GRBs with the ANTARES neutrino telescope

Speakers

  • Silvia CELLI

Primary authors

  • Silvia CELLI (Gran Sasso Science Institute, L'Aquila, Italy)

Co-authors

Description

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 most bright sources in the Universe. Their transient nature allows to drastically reduce the expected background when both a temporal and spatial correlation with the observed gamma-ray prompt emission is required. Cosmic neutrinos are produced in the interaction between accelerated protons and intense radiation fields in the jet. Two different approaches have been adopted in the search: a stacked analysis with the complete sample of GRBs observable using the full ANTARES data set and an individual search from the brightest GRBs (with gamma-ray fluence greater than 10^{-4} erg/cm^2) in the same time period. The methods and the results of these searches for muon neutrinos are here presented. The stacking analysis allows to constrain the contribution to the diffuse flux of neutrinos from this population of sources. In the bright GRB analysis, instead, the internal shock and the photospheric scenarios have been investigated and limits in the parameter space of the fireball model are derived individually.