KM3NeT reports the first astrophysical neutrino above 100 PeV, reviews tensions with other observatories, and explores source scenarios using the inferred diffuse flux.
Adrianiet al., accepted for publication in JCAP,arXiv:2502.08387(2025)
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A single high-energy neutrino event implies that UHE proton sources must evolve strongly like high-luminosity AGN, but this is disfavored when including null results from other detectors, with proton fraction constrained to about 20% at 20 EeV by composition data.
Minimal UHECR flux models from the Telescope Array predict cosmogenic neutrino fluxes consistent with the KM3-230213A event at the 2σ level.
citing papers explorer
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KM3-230213A and potential astrophysical sources
KM3NeT reports the first astrophysical neutrino above 100 PeV, reviews tensions with other observatories, and explores source scenarios using the inferred diffuse flux.
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Implications of a Cosmogenic Origin of KM3-230213A for Ultra-High-Energy Protons
A single high-energy neutrino event implies that UHE proton sources must evolve strongly like high-luminosity AGN, but this is disfavored when including null results from other detectors, with proton fraction constrained to about 20% at 20 EeV by composition data.
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Ultra-high energy event KM3-230213A as a cosmogenic neutrino in light of minimal UHECR flux models
Minimal UHECR flux models from the Telescope Array predict cosmogenic neutrino fluxes consistent with the KM3-230213A event at the 2σ level.