The Awakening of a Blazar at Redshift 2.7 Temporally Coincident with the Arrival of Cospatial Neutrino Event IceCube-201221A

We report on multiwavelength studies of a blazar NVSS J171822+423948, which is identified as the low-energy counterpart of 4FGL J1718.5+4237, the unique γ -ray source known to be cospatial with the IceCube neutrino event IC-201221A. After a 12 yr long quiescent period undetected by Fermi-LAT, γ -ray...

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Bibliographic Details

Published in:	The Astrophysical Journal Letters
Main Authors:	Xiong Jiang, Neng-Hui Liao, Yi-Bo Wang, Rui Xue, Ning Jiang, Ting-Gui Wang
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Galaxy jets Radio loud quasars Gamma-ray sources Neutrino astronomy
Online Access:	https://doi.org/10.3847/2041-8213/ad36b9