High-energy particle emission from plasmoids in jets of active galactic nuclei

The coincident detection of a gamma-ray flare and a neutrino from the blazar TXS 0506+056 suggests that Active Galactic Nuclei (AGN) are possible sources of the diffuse neutrino flux. A space and time-resolved model of the high-energy particle emission of a plasmoid travelling within an AGN jet is presented. This was achieved by modifying the publicly available CRPropa (version 3.1+) propagation framework. The propagation of primary protons is modelled in a purely turbulent magnetic field and interactions of these protons with the environment is taken into account. The model yields a PeV-neutrino flare caused mainly by photo-hadronic interactions of primaries with the accretion disc field. Secondary high-energy gamma-rays are significantly suppressed due to partial attenuation with the ambient photon fields whose combined optical depths achieve their minimal opacity for photons of around 10 TeV. The model is scalable and can fit to specific AGN flare scenarios.