Speaker
Julia Schmid
Description
ANTARES is the largest high-energy neutrino telescope on the Northern Hemisphere. Its main scientific purpose is the search for astrophysical muon neutrinos that are detected via their charged-current interaction in Earth and the subsequent Cherenkov emission of the secondary muon in the water of the Mediterranean Sea.
Among the most promising candidates are gamma-ray bursts, as they are thought to accelerate not only electrons -- leading to the observed gamma rays -- but also protons, which would yield the emission of EeV neutrinos.
Additionally, their short duration provides intrinsically low coincident background.
A search for muon neutrinos from gamma-ray bursts using data of the ANTARES telescope is presented here. Employing an extended maximum likelihood ratio search, the analysis is optimized for a discovery of a neutrino signal as predicted by the numerical NeuCosmA model. No significant excess over background is found, thus 90% confident level upper limits on the neutrino flux from the analytically approximated Guetta model and from the numerical NeuCosmA model are derived.
