The radio blazar TXS 1749-101 coincident with two high-energy neutrinos: IceCube alerts 181023A and the recent 220425A

Plavin A. V., Kovalev Y. Y., Troitsky S. V., Kovalev Yu. A., Popkov A. V., Erkenov A. K., Sotnikova Y. V., Ratan-600 Monitoring Team, Eppel Florian, Gokus Andrea, Hessdoerfer Jonas, Kadler Matthias, Paraschos George F., Roesch, Florian

The arrival direction of the recently detected high-energy (~604 TeV) neutrino, IceCube GOLD alert 220425A (GCN #31944), coincides with the blazar TXS 1749-101. This blazar was previously selected as an association for another high-energy neutrino event, IceCube EHE alert 181023A (GCN #23375), by Plavin et al. (2020). The neutrino arrival moment coincided with a 2018 radio flare of the blazar. TXS 1749-101 is a gamma-ray source listed in 4FGL, but is not significantly detected by Fermi in the last month, as reported in GCN #31953. Original →