TY - JOUR
T1 - H.E.S.S. realtime follow-ups of IceCube high-energy neutrino alerts
AU - H.E.S.S. and IceCube Collaborations
AU - Bradascio, Federica
AU - Ashkar, Halim
AU - Borowska, Jowita
AU - Mbarubucyeye, Jean Damascene
AU - Oukacha, Enzo
AU - Schüssler, Fabian
AU - Suzuki, Hiromasa
AU - Wierzcholska, Alicja
AU - Abbasi, R.
AU - Ackermann, M.
AU - Adams, J.
AU - Agarwalla, S. K.
AU - Aguilar, J. A.
AU - Ahlers, M.
AU - Alameddine, J. M.
AU - Amin, N. M.
AU - Andeen, K.
AU - Anton, G.
AU - Argüelles, C.
AU - Ashida, Y.
AU - Athanasiadou, S.
AU - Axani, S. N.
AU - Bai, X.
AU - Balagopal, V. A.
AU - Baricevic, M.
AU - Barwick, S. W.
AU - Basu, V.
AU - Bay, R.
AU - Beatty, J. J.
AU - Becker Tjus, J.
AU - Beise, J.
AU - Bellenghi, C.
AU - Benning, C.
AU - BenZvi, S.
AU - Berley, D.
AU - Bernardini, E.
AU - Besson, D. Z.
AU - Blaufuss, E.
AU - Blot, S.
AU - Bontempo, F.
AU - Book, J. Y.
AU - Boscolo Meneguolo, C.
AU - Böser, S.
AU - Botner, O.
AU - Böttcher, J.
AU - Bourbeau, E.
AU - Braun, J.
AU - Brinson, B.
AU - Brostean-Kaiser, J.
AU - Kiryluk, J.
N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons.
PY - 2024/9/27
Y1 - 2024/9/27
N2 - The evidence for multi-messenger photon and neutrino emission from the blazar TXS 0506+056 has demonstrated the importance of realtime follow-up of neutrino events by various ground- and space-based facilities. The effort of H.E.S.S. and other experiments in coordinating observations to obtain quasi-simultaneous multiwavelength flux and spectrum measurements has been critical in measuring the chance coincidence with the high-energy neutrino event IC-170922A and constraining theoretical models. For about a decade, the H.E.S.S. transient program has included a search for gamma-ray emission associated with high-energy neutrino alerts, looking for gammaray activity from known sources and newly detected emitters consistent with the neutrino location. In this contribution, we present an overview of follow-up activities for realtime neutrino alerts with H.E.S.S. in 2021 and 2022. Our analysis includes both public IceCube neutrino alerts and alerts exchanged as part of a joint H.E.S.S.-IceCube program. We focus on interesting coincidences observed with gamma-ray sources, particularly highlighting the significant detection of PKS 0625-35, an AGN previously detected by H.E.S.S., and three IceCube neutrinos.
AB - The evidence for multi-messenger photon and neutrino emission from the blazar TXS 0506+056 has demonstrated the importance of realtime follow-up of neutrino events by various ground- and space-based facilities. The effort of H.E.S.S. and other experiments in coordinating observations to obtain quasi-simultaneous multiwavelength flux and spectrum measurements has been critical in measuring the chance coincidence with the high-energy neutrino event IC-170922A and constraining theoretical models. For about a decade, the H.E.S.S. transient program has included a search for gamma-ray emission associated with high-energy neutrino alerts, looking for gammaray activity from known sources and newly detected emitters consistent with the neutrino location. In this contribution, we present an overview of follow-up activities for realtime neutrino alerts with H.E.S.S. in 2021 and 2022. Our analysis includes both public IceCube neutrino alerts and alerts exchanged as part of a joint H.E.S.S.-IceCube program. We focus on interesting coincidences observed with gamma-ray sources, particularly highlighting the significant detection of PKS 0625-35, an AGN previously detected by H.E.S.S., and three IceCube neutrinos.
UR - https://www.scopus.com/pages/publications/85212289853
M3 - Conference article
SN - 1824-8039
VL - 444
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 1546
T2 - 38th International Cosmic Ray Conference, ICRC 2023
Y2 - 26 July 2023 through 3 August 2023
ER -