Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 66: Neutrino astronomy 3
T 66.7: Vortrag
Mittwoch, 6. März 2024, 17:30–17:45, Geb. 30.23: 6/1
Modelling an Orphan Flare from Blazar 1ES 1959+650 on 4th of July 2002 using CRPropa* — •Vladimir Kiselev1,2, Marcel Schroller1,2, and Julia Becker Tjus1,2,3 — 1Theoretical Physics IV, Ruhr University Bochum — 2RAPP Center, Ruhr University Bochum — 3Department of Space, Earth and Environment, Chalmers University of Technology, 412 96 Gothenburg, Sweden
1ES 1959+650 is a blazar, which is known to emit high-energy gamma rays. On the 4th of July 2002, a so-called orphan flare occurred, where a high-energy signal was detected by several Cherenkov observatories with no corresponding X-ray counterpart. Additionally, in later analysis, several neutrinos consistent with the direction of the blazar have been reported by the AMANDA collaboration. Both peculiar signatures could hint at a hadronic origin of the flare, instead of a synchrotron self-Compton scenario often used to model SEDs of blazars. Although not statistically significant, this flare has long been discussed as an early hint of the correlation between gamma rays and neutrinos. Here, we want to pick up on this source and use today’s possibilities of 3D theoretical modelling to test how the orphan flare and the neutrino signal, unmasked by the AMANDA collaboration, can be explained. For this purpose, we utilise a modified version of CRPropa with a hadronic model with propagation in a 3D magnetic field. We present the first results of how this flare and the neutrino signal can be explained within the model of emission from a magnetized, relativistic plasmoid travelling along the AGN jet. *Supported by DFG (SFB 1491)
Keywords: blazars; γ-rays; neutrinos