| Issue |
EPJ Web Conf.
Volume 319, 2025
RICAP-24, 9th Roma International Conference on Astroparticle Physics
|
|
|---|---|---|
| Article Number | 11001 | |
| Number of page(s) | 4 | |
| Section | Parallel Session: Indirect Dark Matter Detection | |
| DOI | https://doi.org/10.1051/epjconf/202531911001 | |
| Published online | 06 March 2025 | |
https://doi.org/10.1051/epjconf/202531911001
Search for gamma-ray spectral lines from dark-matter annihilation with the DAMPE satellite
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
* e-mail: jennifer.frieden@epfl.ch
Published online: 6 March 2025
The annihilation of dark-matter particles may lead to the production of monochromatic gamma-ray emission. In this contribution, the search for spectral lines in the gamma-ray spectrum, using eight years of data collected with the space-borne Dark Matter Particle Explorer is presented. To improve the event selection, two machine-learning algorithms were developed and proved to outperform all the standard methods. No line signal was found between 5 GeV and 280 GeV in the considered region of interest. The constraints on the velocity-averaged cross section of the neutralino was estimated for the Einasto dark-matter density profile and compared to the one obtained with Fermi-LAT and H.E.S.S. data.
© The Authors, published by EDP Sciences, 2025
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