Heidelberg 2022 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 7: Astrophysics

EP 7.7: Vortrag

Mittwoch, 23. März 2022, 17:45–18:00, EP-H1

Time-dependent simulations of a Blazar-Flare — •Maximilian Albrecht and Felix Spanier — Universität Heidelberg - ITA

Active galactic nucleis have been discussed as possible accelerators of high-energy cosmic rays for quite some time. When the Blazar TXS 0506+056 was identified as the source of the high-energy Muon neutrino (IceCube-170922A) detected by the IceCube telescope in 2017 as a result of a large-scale multimessenger campaign, it was a first indication of possible correlations of the increased spectral activity of such sources and their neutrino production. Studies of this correlation by simulating the acceleration processes taking place in the jet and their photon and neutrino emission therefore allow conclusions to be drawn about the composition of the jet plasma by comparing them with the observed fluxes. In this talk, the two-zone model UNICORN-0d is used to perform a self-consistent modeling of the eruption of TXS 0506+056 in 2017 based on the existing multimessenger data. A special focus will be put upon the data in the very high energy regime. The importance of these data being taken simultaneously is discussed by using time-resolved simulations of an emission flare. In contrast to previous models this approach addresses the possibility that the data from 2017 might represent different emission-states of the Blazar.