Search for neutrino emission from GRB 221009A using the KM3NeT ARCA and ORCA detectors Aiello, S. Díaz García, Antonio Francisco Navas Concha, Sergio KM3NeT collaboration, / neutrino astronomy neutrino experiments gamma ray bursts theory Gamma-ray bursts are promising candidate sources of high-energy astrophysical neutrinos. The recent GRB 221009A event, identified as the brightest gamma-ray burst ever detected, provides a unique opportunity to investigate hadronic emissions involving neutrinos. The KM3NeT undersea neutrino detectors participated in the worldwide follow-up effort triggered by the event, searching for neutrino events. In this paper, we summarize subsequent searches, in a wide energy range from MeV up to a few PeVs. No neutrino events are found in any of the searches performed. Upper limits on the neutrino emission associated with GRB 221009A are computed. 2025-01-07T10:09:38Z 2025-01-07T10:09:38Z 2024-08-05 journal article Aiello, S. & Díaz García, A.F. & Navas Concha, S. & KM3NeT collaboration. JCAP08(2024)006. [https://doi.org/10.1088/1475-7516/2024/08/006] https://hdl.handle.net/10481/98448 10.1088/1475-7516/2024/08/006 eng info:eu-repo/grantAgreement/EC/H2020/101008324 http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional IOP science