The flaring radio-bright blazar PKS 0215+015 coincident with the high energy neutrino alert IceCube-220225A

A. V. Plavin, Y. Y. Kovalev, S. V. Troitsky, Yu. A. Kovalev, A. V. Popkov, M. L. Lister, J. L. Gomez, T. Hovatta, S. Kiehlmann, I. Liodakis, A. C.S. Readhead, A. K. Erkenov, Y. V. Sotnikova, G. V. Zhekanis

The recent BRONZE neutrino alert IceCube-220225, GCN #31650, with an energy of 154 TeV is suggested to be associated with the radio-bright blazar PKS 0215+015 following the predictions of Plavin et al. (2020) analysis. We note that this is one of the brightest blazars in the radio sky.

We report that PKS 0215+015 is showing a major radio flare at millimeter and centimeter wavelengths since the middle of 2021. Flux densities exceed 3 Jy, and these levels are the highest over more than 20 years of observations. Being a bright radio blazar, this object is also gamma-ray bright, with a major flare reported by the Fermi collaboration in ATel #15243. Original →