Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 16: Cosmic Rays V

T 16.2: Vortrag

Montag, 15. März 2021, 16:15–16:30, Tp

Diffusion of cosmic rays in plasmoids of AGN jets - implications for multimessenger predictions — •Marcel Schroller, Julia Becker-Tjus, Mario Hoerbe, Ilja Jaroschewski, and Patrick Reichherzer — Ruhr-University Bochum,44780 Bochum, Germany

Active Galactic Nuclei (AGN), and the accompanied AGN jets, are one of the most fascinating and luminous objects in the observable Universe. Both the active cores and their jets are candidates for the engine of cosmic rays and neutrinos with the highest energies measured at Earth. A deep understanding of the processes related to jets will not only fuel the field of high energy cosmic rays, it will give insights in fundamental plasma, astro, and particle physics. The physical and mathematical modelling of an AGN jet is challenging, with ambiguous signatures that need to be understand by numerical simulations of cosmic-ray transport and interaction. Based on the work of Hoerbe et al. (MNRAS 2020), a simulation framework for hadronic constituents and their interactions inside of a plasmoid, propagating along the AGN jet axis, was made. The final goal of the simulation is to give predictions in context of multimessenger astrophysics. This talk will answer one of the preceding questions, namely at which point the propagation of cosmic rays inside the plasmoid is diffusive or ballistic. The solution of the telegraph equation in this context will be presented and analysed, alongside a scheme for the classification of different astrophysical regions. A first excerpt of the results will be given, as well as a run time analysis of the full 24-dimensional parameter space of the setup.