Search for muon neutrinos from GRBs with the ANTARES telescope.

Sanguineti M. per la Collaborazione ANTARES
  Giovedì 14/09   16:00 - 19:00   Aula A203   III - Astrofisica
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) are promising candidates because they are the brightest 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. An individual search from the brightest GRBs (with gamma-ray fluence greater than $10^{-4}$ erg/cm${}^{2}$) has been performed. The methods and the results of this search for muon neutrinos are here presented. The internal shock and the photospheric scenarios have been investigated and limits in the parameter space of the fireball model are derived individually.