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Fermi-LAT counterparts of IceCube neutrinos above 100 TeV

1 Pith paper cite this work, alongside 26 external citations. Polarity classification is still indexing.

1 Pith paper citing it
26 external citations · Pith
abstract

The IceCube Collaboration has published four years of data and the observed neutrino flux is significantly in excess of the expected atmospheric background. Due to the steeply falling atmospheric background spectrum, events at the highest energies are most likely extraterrestrial. In our previous approach we have studied blazars as the possible origin of the High-Energy Starting Events (HESE) neutrino events at PeV energies. In this work we extend our study to include all HESE neutrinos (which does not include IC 170922A) at or above a reconstructed energy of 100 TeV, but below 1 PeV. We study the X-ray and $\gamma$-ray data of all ($\sim200$) 3LAC blazars that are positionally consistent with the neutrino events above 100 TeV to determine the maximum neutrino flux from these sources. This larger sample allows us to better constrain the scaling factor between the observed and maximum number of neutrino events. We find that when we consider a realistic neutrino spectrum and other factors, the number of neutrinos is in good agreement with the detected number of IceCube HESE events. We also show that there is no direct correlation between \Fermi-LAT $\gamma$-ray flux and the IceCube neutrino flux and that the expected number of neutrinos is consistent with the non-detection of individual bright blazars.

fields

astro-ph.HE 1

years

2026 1

verdicts

ACCEPT 1

representative citing papers

Active Galactic Nuclei as high-energy neutrino sources

astro-ph.HE · 2026-06-29 · accept · novelty 2.5

AGN (jetted and non-jetted) are viable high-energy neutrino sources, with TXS 0506+056 and NGC 1068 as the only statistically significant associations so far, while gamma-ray blazars contribute only a small fraction of the diffuse flux.

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Showing 1 of 1 citing paper.

  • Active Galactic Nuclei as high-energy neutrino sources astro-ph.HE · 2026-06-29 · accept · none · ref 265 · internal anchor

    AGN (jetted and non-jetted) are viable high-energy neutrino sources, with TXS 0506+056 and NGC 1068 as the only statistically significant associations so far, while gamma-ray blazars contribute only a small fraction of the diffuse flux.