Search for cosmic neutrino point sources & extended sources with 6-21 lines of KM3NeT/ARCA

Parallel talk presented at the XXI International Workshop on Neutrino Telescopes - Padova 29 September - 3 October 2025

(https://agenda.infn.it/event/44606/)

On behalf of the KM3NeT Collaboration

Abstract:

Identifying the astrophysical sources of high-energy neutrinos is essential to understanding the most energetic phenomena in the Universe. While the existence of cosmic neutrinos has been established by the IceCube Neutrino Observatory, their origins remain largely unknown. The KM3NeT/ARCA detector, currently under construction in the Mediterranean Sea, is designed to address this question. With an eventual instrumented volume of one cubic kilometre and exceptional angular resolution (better than 0.1° for muon neutrinos with energies above 300 TeV), KM3NeT offers a unique and complementary view of the sky compared to IceCube, covering a broad energy range. As of now, over 10% of the detector has been deployed. This contribution presents the results of binned searches for neutrino point sources and extended sources from known catalogs, as well as an all-sky scan using KM3NeT/ARCA data collected between May 2021 and September 2023 with an evolving detector configuration of up to 21 detection lines.