KM3NeT: first results and real-time multi-messenger program

by Massimo Mastrodicasa (ROMA1)

Monday 19 Jan 2026, 14:30 → 16:00 Europe/Rome

Aula Conversi (Dipartimento di Fisica-Ed. G.Marconi)

KM3NeT is a multi-purpose neutrino detector under construction in the Mediterranean Sea and currently taking data with a partial detector configuration. It is composed of two deep-sea water-Cherenkov detectors located at two different sites, sharing the same technology but designed to address different physics goals: ARCA (Italy), optimised for the detection of high-energy cosmic neutrinos in the TeV-PeV range, and ORCA (France), optimised for low-energy atmospheric neutrinos in the few-GeV range. Thanks to the multi-PMT design of their optical modules, both detectors are sensitive also to MeV neutrinos emitted by core-collapse supernovae, allowing them to be used for neutrino astronomy across an energy range from a few MeV to a few PeV. An overview of the KM3NeT infrastructure and its first results will be presented, with a special focus on its real-time multi-messenger program, as part of the multi-messenger effort to study transient astrophysical phenomena through the simultaneous observation of different cosmic messengers. Indeed, given their large field of view and almost 100% duty cycle, neutrino telescopes are ideally suited to early notify other multi-messenger facilities when interesting neutrino candidates are detected and to perform follow-ups of external triggers. These goals are achieved by KM3NeT through the implementation of an online analysis system that continuously performs fast real-time processing of collected data, automatic follow-ups of received alerts, and identification of neutrino candidates.

Zoom link: https://uniroma1.zoom.us/j/87038625161?pwd=cEtGRjZNT2VWSlJIWmxaYmxSMDhRZz0

KM3NeT_INFN_seminar_Mastrodicasa.pdf