Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.07827 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Although connections between flaring blazars and some IceCube neutrinos have been established, the dominant sources for the bulk extragalactic neutrino emissions are still unclear and one widely suggested candidate is a population of radio galaxies. Because of their relatively low $γ$-ray radiation luminosities ($L_γ$), it is rather challenging to confirm such a hypothesis with the neutrino/GeV $γ$-ray flare association. Here we report on the search for the GeV $γ$-ray counterpart of the neutrino IC-180213A and show that the nearby ($z$ = 0.03) broad line radio galaxy 3C 120 is the only known co-spatial GeV $γ$-ray source in a half-year epoch around the neutrino detection. An intense $γ$-ray flare, the second strongest one among the entire 16-year period, is temporally coincident with the detection of IC-180213A. Moreover, accompanying optical brightenings in $g$-band and $V$-band are observed. We also find that the IC-180213A / 3C 120 association follows the $L_γ$-$D_{L}^{2}$ correlation for the neutrino sources (candidates), including NGC 1068 and some blazars. These facts suggest that 3C 120 is a candidate for emitting high-energy neutrinos and may offer an initial evidence for the radio galaxy origin of some PeV neutrinos.