Göttingen 2025 – scientific programme
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T: Fachverband Teilchenphysik
T 75: Neutrino Astronomy IV
T 75.9: Talk
Thursday, April 3, 2025, 18:15–18:30, VG 1.105
Hadronic Modelling of the TXS 0506+056 2017 Flare Using CRPropa* — •Vladimir Kiselev1,2, Leander Schlegel1,2, Julien Dörner1,2, and Julia Becker Tjus1,2 — 1Theoretische Physk IV, Fakultät für Physik, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum — 2RAPP Center, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum
TXS 0506+056 is a well-studied blazar that, in 2017, was associated with a high-energy neutrino detection by IceCube during a gamma-ray flare. This event marked the first indication of detection in multi-messenger astrophysics, highlighting the need for robust theoretical models. In response, several attempts have been made to model the multi-messenger emission from this flare. Here, we present our approach to modelling the 2017 neutrino and gamma-ray flares using a modified version of CRPropa. Compared to other models, we adopt a hadronic model to explain both the Very High-Energy gamma-rays and neutrinos, incorporating particle propagation in a fully three-dimensional environment with turbulent magnetic fields. Furthermore, we validate the result using both the SED and the lightcurve of the flare.
*Supported by DFG (SFB 1491)
Keywords: blazars; γ-rays; neutrinos