Search for muon neutrinos from gamma-ray bursts with the ANTARES neutrino telescope using 2008 to 2011 data
S. Adri\'an-Mart\'inez, A. Albert, I. Al Samarai, M. Andr\'e, M., Anghinolfi, G. Anton, S. Anvar, M. Ardid, T. Astraatmadja, J.-J. Aubert, B., Baret, J. Barrios-Marti, S. Basa, V. Bertin, S. Biagi, C. Bigongiari, C., Bogazzi, B. Bouhou, M. C. Bouwhuis, J. Brunner, J. Busto
TL;DR
This study searches for muon neutrinos from gamma-ray bursts using ANTARES data from 2007 to 2011, employing advanced simulations and statistical methods, but finds no significant neutrino signals.
Contribution
It introduces a detailed analysis of gamma-ray burst neutrino emissions using NeuCosmA spectra and an optimized likelihood approach with ANTARES data.
Findings
No significant neutrino excess detected
Upper limits set on neutrino flux from gamma-ray bursts
Methodology improves sensitivity for future searches
Abstract
A search for muon neutrinos in coincidence with gamma-ray bursts with the ANTARES neutrino detector using data from the end of 2007 to 2011 is performed. Expected neutrino fluxes are calculated for each burst individually. The most recent numerical calculations of the spectra using the NeuCosmA code are employed, which include Monte Carlo simulations of the full underlying photohadronic interaction processes. The discovery probability for a selection of 296 gamma-ray bursts in the given period is optimised using an extended maximum-likelihood strategy. No significant excess over background is found in the data, and 90% confidence level upper limits are placed on the total expected flux according to the model.
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