TY - JOUR
T1 - Search for a cosmic point-like neutrino source from the direction of the ultra-high-energy event KM3-230213A
AU - ANTARES and KM3NeT Collaborations
AU - Pillas, Marion
AU - Duverne, Pierre Alexandre
AU - Lamoureux, Mathieu
AU - Melo, Iara Tosta E.
AU - de Wasseige, Gwenhaël
AU - Albert, A.
AU - Alves, S.
AU - André, M.
AU - Ardid, M.
AU - Ardid, S.
AU - Aubert, J. J.
AU - Aublin, J.
AU - Baret, B.
AU - Basa, S.
AU - Becherini, Y.
AU - Belhorma, B.
AU - Benfenati, F.
AU - Bertin, V.
AU - Biagi, S.
AU - Boumaaza, J.
AU - Bouta, M.
AU - Bouwhuis, M. C.
AU - Brânzaş, H.
AU - Bruijn, R.
AU - Brunner, J.
AU - Busto, J.
AU - Caiffi, B.
AU - Calvo, D.
AU - Campion, S.
AU - Capone, A.
AU - Carenini, F.
AU - Carr, J.
AU - Carretero, V.
AU - Cartraud, T.
AU - Celli, S.
AU - Cerisy, L.
AU - Chabab, M.
AU - Cherkaoui El Moursli, R.
AU - Chiarusi, T.
AU - Circella, M.
AU - Coelho, J. A.B.
AU - Coleiro, A.
AU - Coniglione, R.
AU - Coyle, P.
AU - Creusot, A.
AU - Díaz, A. F.
AU - De Martino, B.
AU - Distefano, C.
AU - Di Palma, I.
AU - Tully, C.
N1 - Publisher Copyright:
© Copyright owned by the author(s)
PY - 2025/12/30
Y1 - 2025/12/30
N2 - On February 13, 2023, the KM3NeT/ARCA neutrino telescope detected an ultra-high-energy neutrino event, KM3-230213A, with an estimated energy of approximately 220 PeV - the most energetic neutrino ever observed. This unprecedented event marks a significant milestone in the field of astroparticle physics, offering new insights into the potential sources of these extreme astrophysical phenomena. In this work, we present a follow-up analysis aimed at identifying a potential cosmic point-like neutrino source associated with KM3-230213A. We perform a dedicated search for a cluster of neutrino events in the direction of KM3-230213A using data from KM3NeT/ARCA, KM3NeT/ORCA, ANTARES and IceCube. In order to assess the potential spatial clustering of neutrino events around KM3-230213A, we employ either an ON/OFF technique or a maximum-likelihood method. This contribution presents the methodology, the datasets used, the event selection criteria, and the statistical methods applied. We discuss the results in the context of multi-messenger astrophysics, highlighting their implications for the origin of the ultra-high-energy neutrino KM3-230213A.
AB - On February 13, 2023, the KM3NeT/ARCA neutrino telescope detected an ultra-high-energy neutrino event, KM3-230213A, with an estimated energy of approximately 220 PeV - the most energetic neutrino ever observed. This unprecedented event marks a significant milestone in the field of astroparticle physics, offering new insights into the potential sources of these extreme astrophysical phenomena. In this work, we present a follow-up analysis aimed at identifying a potential cosmic point-like neutrino source associated with KM3-230213A. We perform a dedicated search for a cluster of neutrino events in the direction of KM3-230213A using data from KM3NeT/ARCA, KM3NeT/ORCA, ANTARES and IceCube. In order to assess the potential spatial clustering of neutrino events around KM3-230213A, we employ either an ON/OFF technique or a maximum-likelihood method. This contribution presents the methodology, the datasets used, the event selection criteria, and the statistical methods applied. We discuss the results in the context of multi-messenger astrophysics, highlighting their implications for the origin of the ultra-high-energy neutrino KM3-230213A.
UR - https://www.scopus.com/pages/publications/105029005471
UR - https://www.scopus.com/pages/publications/105029005471#tab=citedBy
U2 - 10.22323/1.501.1110
DO - 10.22323/1.501.1110
M3 - Conference article
AN - SCOPUS:105029005471
SN - 1824-8039
VL - 501
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 1110
T2 - 39th International Cosmic Ray Conference, ICRC 2025
Y2 - 15 July 2025 through 24 July 2025
ER -