Seminar Felicia Krauss: Bert, Ernie, and Big Bird: Blazars as possible sources of IceCube PeV neutrinos
The IceCube Collaboration has published results on a neutrino flux significantly in excess of the atmospheric background. Due to low atmospheric background at PeV energies, the highest energy events are the most likely ones to be of extraterrestrial origin. We use broadband spectra in the IceCube integration period to calculate the maximum expected number of neutrinos assuming a pion photoproduction model. We find a flaring blazar in positional and temporal agreement with the highest-energy neutrino event. Further, we use the TANAMI sample to search for hadronic signatures in the broadband spectrum and to study the spectral evolution during blazar outbursts.
Felicia Krauss - Remeis Observatory & ECAP/FAU Erlangen-Nürnber