Speaker
Description
Identifying cosmic objects that emit diverse messengers, such as photons, gravitational waves, and high-energy neutrinos, would provide unique insights into the properties and processes in the Universe and its active sources.
One of the most promising sources for common gravitational wave and neutrino emission are gamma ray bursts. From the release of a huge amount of energy in cosmic explosions in a short time and a small volume, relativistic jets of plasma are created. These jets are expected to emit neutrinos.
Such emission is likely associated to mergers of two neutron stars or neutron star-black hole mergers, but some models also predict that binary black hole mergers would have sufficient luminosity to power the acceleration of cosmic rays to the highest energies, providing neutrino emission.
KM3NeT is a deep-sea Cherenkov neutrino telescope currently under
deployment in the Mediterranean Sea. It is playing an active role in
multimessenger astronomy, owing to its sensitivity in an extended neutrino energy range (from MeV to PeV energies).
This contribution presents the general structure of a search for neutrino
candidates in the KM3NeT data using a binned likelihood method. Interesting neutrino candidates must be spatially and temporally correlated with the gravitational wave events reported in the O4 catalogue by the LIGO-Virgo-KAGRA collaboration.
