Patterns in the Multiwavelength Behavior of Candidate Neutrino Blazars
A. Franckowiak, S. Garrappa, V. Paliya, B. Shappee, R. Stein, N. L. Strotjohann, M. Kowalski, S. Buson, S. Kiehlmann, W. Max-Moerbeck, R. Angioni
Abstract
Abstract Motivated by the identification of the blazar TXS 0506+056 as the first promising high-energy neutrino counterpart candidate, we search for additional neutrino blazar candidates among the Fermi–Large Area Telescope detected blazars. We investigate the multiwavelength behavior from radio to GeV gamma-rays of blazars found to be in spatial coincidence with single high-energy neutrinos and lower-energy neutrino flare candidates. In addition, we compare the average gamma-ray emission of the potential neutrino-emitting sources to the entire sample of gamma-ray blazars. We find that neutrino-emitting blazar candidates are statistically compatible with hypotheses of both a linear correlation and no correlation between neutrino and gamma-ray energy flux.