Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 78: Gamma Astronomy II

T 78.6: Vortrag

Donnerstag, 3. April 2025, 17:30–17:45, VG 2.103

Modeling of dark matter prompt and secondary signatures in dwarf galaxies — •Athithya Aravinthan^{1, 2}, Julia Becker Tjus^{1, 2, 3}, and Lukas Merten^{1, 2} — ¹Theoretische Physik IV, Ruhr-Universität Bochum, Bochum, Germany — ²RAPP Center, Ruhr-Universität Bochum, Bochum, Germany — ³Department of Space, Earth and Environment, Chalmers University of Technology, 412 96 Gothenburg, Sweden

Dwarf galaxies are a convenient testing ground in the indirect search for Dark Matter (DM), due to their low astrophysical background in radio and gamma ray frequencies. In addition to the much explored prompt emission of DM in dwarf galaxies, one must also consider the secondary multimessenger signatures of charged DM annihilation products via synchrotron radiation and inverse Compton scattering. The consistent modeling of this secondary emission with the astrophysical background is necessary for placing stringent constraints on the nature of DM.

In this work, the multi-wavelength secondary spectrum of DM annihilation for dwarf spheroidal galaxies is calculated using the open-source code CRPropa 3.2., which allows for the self-consistent treatment of the astrophysical background and secondary emissions. The code can also be extended to treat DM particles, which is currently not available in the public version. *Supported by DFG (SFB 1491).

Keywords: dark matter; dwarf galaxies