Affiliation:
1. Stockholm University
2. UMR 7589 CNRS and Sorbonne Université
3. UMR 7095 CNRS and Sorbonne Université
Abstract
During galactic supernova (SN) explosions, a large amount of feebly interacting particles (FIPs) may be produced. In this work we analyze electrophilic FIPs with masses in the MeV-range that escape from SN and decay into electron-positron pairs, causing an exotic leptonic injection. This contribution adds up to known components, leading to an unexpected excess of x-ray fluxes generated by inverse-Compton scattering of the injected particles on low-energy photon backgrounds. For the first time in the context of FIPs, we use XMM-Newton x-ray measurements to obtain the strongest and most robust bounds on electrophilic FIPs produced by SN in our Galaxy.
Published by the American Physical Society
2024
Funder
European Cooperation in Science and Technology
Horizon 2020 Framework Programme
Sorbonne Université
European Research Council
Vetenskapsrådet
Swedish National Space Agency
Initiative Physique des Infinis
Publisher
American Physical Society (APS)
Cited by
2 articles.
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