Bonn 2020 – scientific programme
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T: Fachverband Teilchenphysik
T 73: Multi-messenger astronomy
T 73.4: Talk
Thursday, April 2, 2020, 17:15–17:30, H-HS X
Neutrino flux estimates for hadronic AGN models — •Felix Spanier1,2 and Stephan Richter2 — 1Institut für Theoretische Astrophysik, Universität Heidelberg — 2Centre for Space Research, North-West University, Potchefstroom, South Africa
Recent reports of possible correlations between high energy neutrinos observed by IceCube and Active Galactic Nuclei (AGN) activity sparked a burst of publications that attempt to predict the neutrino flux of these sources. However, often rather crude estimates are used to derive the neutrino rate from the observed photon spectra. In this work neutrino fluxes were computed in a wide parameter space. The starting point of the model was a representation of the full spectral energy density (SED) of 3C 279. The time-dependent hybrid model that was used for this study takes into account the full pγ reaction chain as well as proton synchrotron, electron-positron-pair cascades and the full SSC scheme. We compare our results to estimates frequently used in the literature. This allows to identify regions in the parameter space for which such estimates are still valid and those in which they can produce significant errors. Furthermore, if estimates for the Doppler factor, magnetic field, proton and electron densities of a source exist, the expected IceCube detection rate is readily available. An outlook on applications to TXS 0506+056 is given.