AGN constraints on neutrino-dark matter scattering

Abstract

The IceCube collaboration has identified neutrinos of energy $\sim 10-100$ TeV from the blazar TXS 0506+056 and the active galaxy NGC 1068, which must have traveled through a dense dark matter spike surrounding the supermassive black holes that power the galactic nuclei. We use this to set new constraints on dark matter-neutrino scattering, and interpret the results in terms of a dark photon that couples to baryon minus lepton number.

Comments: 4.1 pages, 4 figures. Talk given at Moriond VHEPU based on arXiv:2209.02713 and arXiv:2301.08756