The KM3NeT collaboration has reported the detection of the highest energy neutrino event observed to date. The energy of the event is of the order of 220 PeV hinting towards a neutrino flux at the highest energies. In this article, the potential blazar origin for this event is explored. The publicly available Astro-Multimessenger Modeling software is used to model the blazar gamma-ray and neutrino fluxes. It is concluded that a population of blazars could produce the diffuse flux compatible with the observation of the ultra-high energy event detected by the KM3NeT/ARCA detector. At the same time, the gamma-ray flux produced by such a population of blazars is consistent with the diffuse gamma-ray flux measured by the Fermi Large Area Telescope.
@article{arxiv.2511.13886,
title = {Blazars as a Potential Origin of the KM3-230213A Event},
author = {The KM3NeT Collaboration},
journal= {arXiv preprint arXiv:2511.13886},
year = {2025}
}
Comments
15 pages, 7 figures, 2 tables and 1 appendix. To be submitted to JCAP