Presentation #203.06 in the session MeV and friends: Gamma-ray astronomy in the context of time-domain and multi-messenger science.
Recent progress in the identification of the origin of high-energy cosmic neutrinos points to active galaxies that are opaque to very-high-energy gamma rays. The multimessenger picture for neutrino emission from these sources indicates that the gamma rays that accompany neutrinos are suppressed to lower energies before leaving the sources. Therefore, the complete multimessenger picture awaits future experiments targeting the MeV energy range. In this talk, I will discuss the recent evidence for the origin of high-energy cosmic neutrinos, describe the multimessenger picture, and present the prospects for the identification of similar sources with current and future experiments.