SMuK 2023 – scientific programme
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T: Fachverband Teilchenphysik
T 88: Gamma Astronomy IV
T 88.1: Talk
Wednesday, March 22, 2023, 17:30–17:45, POT/0151
Simulated galactic SNR populations compared to experimental data — •Rowan Batzofin1, Kathrin Egberts1, Constantin Steppa1, and Pierre Cristofari2 — 1University of Potsdam, Potsdam, Germany — 2Observatoire de Paris, PSL Research University, LUTH, France
For a long time it has been believed that supernova remnants are the primary source of galactic cosmic rays up to the knee although it has not been conclusively proven yet. Supernova remnants are expected to produce VHE gamma rays via hadronic interactions between the cosmic rays accelerated at the shock and the ambient gas in the interstellar medium. There are many supernova remnants detected in the radio energy range but very few of them have been identified at VHE.
To study the VHE emission of galactic supernova remnants we create a model for supernova remnant populations. The supernova remnant population model ingredients are: The acceleration physics of the supernova remnants, the matter distribution of the interstellar medium in the Milky Way and the source distribution for the supernova remnants in the Milky Way. We utilise population synthesis to optimise some of the parameters for the model to best fit the experimental data. We compare our simulated populations to experimental data by looking at the source distribution and the detectability of the simulated sources.
We test the simulated populations of galactic supernova remnants against the experimental observations to show whether supernova remnants could be the primary accelerators of cosmic rays.