Blazars as a potential origin of the KM3-230213A event
(2026) Journal of Cosmology and Astroparticle Physics — Vol. 03 (2026)
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- Abstract
- 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.
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Clark, R., de Wasseige, G., Lazar, J., Lemaitre, V., Mauro, J., Scarnera, M., Myhr, P., KM3NeT, & et al. (2026). Blazars as a potential origin of the KM3-230213A event. Journal of Cosmology and Astroparticle Physics, 03. https://doi.org/10.1088/1475-7516/2026/03/033 (Original work published 2026)