Berlin 2015 – wissenschaftliches Programm

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SYGD: Symposium GR-HK-T Disserstationspreis

SYGD 1: GR-HK-T Dissertationspreis

SYGD 1.3: Hauptvortrag

Montag, 16. März 2015, 16:30–17:00, HFT-FT 101

Searches for High-Energy Neutrinos from Gamma-Ray Bursts with the ANTARES Neutrino Telescope — •Julia Schmid — ECAP - Erlangen Centre for Astroparticle Physics, Friedrich-Alexander Universität Erlangen

The high-energy neutrino telescope ANTARES detects astrophysical muon neutrinos via their charged-current interactions in the Earth and the subsequent Cherenkov emission of the secondary muons in the water of the Mediterranean Sea. Gamma-ray bursts (GRBs) are among the most promising candidate sources for the detector as they are thought to accelerate not only electrons - leading to the observed gamma rays - but also protons, which would inevitably yield the additional emission of EeV neutrinos. Compelling evidence of such a cosmic neutrino signal from any astrophysical source would prove the acceleration of hadrons and, for the first time, identify those processes in the universe that could produce cosmic rays of ultra-high energies - which cannot unambiguously be put to the test by purely electromagnetic observations. Combining neutrino data with data from multiple spacecraft and Earth-bound telescopes, novel techniques were developed to single out a neutrino signal from GRBs, both in the search for simultaneous, as well as a possibly time-shifted, neutrino emission with respect to the photon signal. These methods considerably enhance the detection potential for such faint neutrino signals and will certainly allow operating experiments and, in particular, the planned KM3NeT detector to put the prevailing models of hadronic acceleration in GRBs to the test in the near future.