Göttingen 2025 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 10: Poster Session I

P 10.35: Poster

Dienstag, 1. April 2025, 16:15–18:15, ZHG Foyer 1. OG

Particle acceleration in core-collapse supernova remnant — •Samata Das^1,2, Robert Brose², Dominique M.-A. Meyer Meyer³, Martin Pohl^2,4, and Iurii Sushch⁵ — ¹Theoretische Physik IV, Fakultät für Physik Astronomie, Ruhr-Universität Bochum, 44780 Bochum, Germany — ²University of Potsdam, 14476 Potsdam, Germany — ³Institute of Space Sciences , 08193 Barcelona, Spain — ⁴DESY, 15738 Zeuthen, Germany — ⁵Gran Sasso Science Institute, 67100 L’Aquila, Italy

The complex environments around core-collapse supernova remnants (SNRs) from their massive progenitors, shape spectra and morphology of non-thermal emissions from remnants. We study the effects of hydrodynamics and magnetic field of circumstellar medium on particle acceleration and emission from remnants. We use RATPaC and PLUTO code where hydrodynamic equations with transport equation for CRs and scattering magnetic turbulence, induction equation for magnetic field evolution solved in 1-D spherical symmetry. Our study shows the SNR propagation through hot bubble, for example, bubble by 60M_⊙, reduce significantly the sonic Mach number of SNR shock that persistently softens the particle spectra with spectral index 2.5, and steepens the radio spectra. SNR with 20 M_⊙ Red-Super giant progenitor produces steep radio spectra, and soft pion-decay gamma-ray spectra, briefly during the interaction of the SNR shock with the dense RSG shell. For old remnants inside shocked ISM, we got softer pion- decay emission, consistent with the observed gamma-ray emission
Acknowledgement: Supported by SFB1491

Keywords: SNR; wind bubble; hydrodynamics; particle acceleration; 1-D study