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Cosmogenic Neutrino Point Source and KM3-230213A

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arxiv 2504.10378 v2 pith:ZL4ZBLLO submitted 2025-04-14 astro-ph.HE

Qinyuan Zhang , Tian-Qi Huang , Zhuo Li This is my paper
classification astro-ph.HE
keywords sourcespointneutrinoangularcosmiccosmogenicdiffuseflux
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Cosmogenic neutrinos (CNs) are produced by ultra-high energy cosmic rays (UHECRs) interacting with cosmic background radiation. We investigated the properties of CN point/extended sources, i.e, the neutrino spectrum, and angular profile as functions of time, by assuming that UHECR sources are transient events, such as gamma-ray bursts. The properties depend much on the intergalactic magnetic field (IGMF), but the angular extent is in general sub-degree, within which the CN flux can overshoot the diffuse CN flux in early time. The nearby CN point sources could be detected for the low IGMF case by future neutrino telescopes. The recent KM3-230213A event is possible to account for by a nearby transient CN source, rather than diffuse CN emission. Observations of CN point sources will provide a chance to search for UHECR sources.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Earth rotation turns event timing into a geometric probe of UHE neutrino origin

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Earth-rotation timing lowers the number of future KM3NeT events needed to exclude a dark-matter origin of KM3-230213A from ~22–27 to ~14–16.

  2. Scrutinizing the cosmogenic origin of the KM3-230213A event: A Multimessenger Perspective

    astro-ph.HE 2025-07 conditional novelty 5.0 of 10

    A multimessenger transport calculation finds that KM3-230213A is plausibly cosmogenic only if it originates from hard-spectrum protons above the ankle with source evolution close to (1+z)^3.

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