Speaker
Description
Gamma-ray bursts (GRBs) are intense transient phenomena occurring at a rate of about one per day, which are promising candidate sources of cosmic neutrinos in the GeV-PeV energy range. Despite extensive efforts, no correlation between neutrinos and GRBs has been observed so far, which motivates more exhaustive searches in a multi-messenger context.
In this contribution, a stacking search for neutrinos in spatial and time correlation of GRBs is presented, using data from the KM3NeT/ARCA detector. The detector, currently under construction at the bottom of the Mediterranean Sea, is already operational with partial configurations. The analysis covers the period when KM3NeT/ARCA was taking data with 21 detection lines, which represents close to 10% of the full detector. The search is based on methods originally developed for real-time analyses, incorporating data with refined calibrations and including dynamic positioning and enhanced event selection criteria. The results include significance estimations from various GRB locations inspected, highlighting the potential of KM3NeT/ARCA to perform dedicated multi-messenger studies.
| Collaboration(s) | KM3NeT Collaboration |
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