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T: Fachverband Teilchenphysik
T 73: Multi-messenger astronomy
T 73.5: Vortrag
Donnerstag, 2. April 2020, 17:30–17:45, H-HS X
On the relative importance of hadronic emission processes along the jet axis of Active Galactic Nuclei — •Mario Hoerbe1,2, Paul Morris2,3, Garret Cotter2, and Julia Becker Tjus1 — 1Ruhr-Universität Bochum, Germany — 2University of Oxford, United Kingdom — 3DESY, Zeuthen, Germany
We present a space and time-resolved model of the high-energy particle emission of a plasmoid assumed to travel along the axis of an AGN jet at relativistic speed. This was achieved by modifying the publicly available CRPropa (version 3.1) propagation framework which in our work is capable of being applied to sub-kpc scales. The propagation of a population of primary protons is modelled in a purely turbulent magnetic field and we take into account pγ-interactions of these protons either with photons scattered from the accretion disc or with synchrotron radiation emitted by ambient relativistic electrons. The significance of inelastic pp-collisions among primaries and energetically less significant hadronic matter is evaluated.
Our model produces a PeV-neutrino flare which is caused mainly by photo-hadronic interactions of primaries with the accretion disc field. A relative deficit of secondary high-energy gamma-rays to neutrinos is observed due to γγ-pair-attenuation with the ambient photon fields whose combined optical depths achieve their minimal opacity for photons in the TeV-range. We warmly thank the Studienstiftung des deutschen Volkes (German Academic Scholarship Foundation) for the funding of this work.