SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 115: Gamma Astronomy V

T 115.4: Vortrag

Donnerstag, 23. März 2023, 16:35–16:50, POT/0151

Simultaneous TeV and X-Ray Observations of Markarian 421 in 2020 — •Bernd Schleicher for the MAGIC collaboration — University of Würzburg, Institute for Theoretical Physics and Astrophysics, Germany

The blazar Mrk 421 is one of the brightest and most studied sources in very-high-energy (VHE) gamma rays. As the underlying processes of the production of these gamma rays are still under debate and different models predict correlations between X-rays and gamma rays and some hadronic models for example predict specific features in the hard X-ray regime. Therefore, regular multi-wavelength (MWL) campaigns have been carried out since 2009. In late 2020, simultaneous observations were performed with the X-ray satellites XMM-Newton, the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), and the Major Atmospheric Gamma Imaging Cherenkov Telescopes (MAGIC) to check if these hadronic signatures can be found. Two INTEGRAL observations with an long exposure of 165 ks were performed during the time range of 21. November to 24. November and the time range of 12. December to 15. December and data were taken simultaneously with XMM-Newton and MAGIC. The results of this MWL campaign will be presented.