14–17 Jul 2025
Cosener's House
Europe/London timezone

Dark Matter in X-rays: Revised XMM-Newton Limits and New Constraints from eROSITA

17 Jul 2025, 11:35
20m
Cosener's House

Cosener's House

15-16 Abbey Cl Abingdon OX14 3JD UK

Speaker

Damon Cleaver (King's College London)

Description

Dark Matter in X-rays: Revised XMM-Newton Limits and New Constraints from eROSITA
We investigate two classes of dark matter (DM) candidates, sub-GeV particles and primordial black holes (PBHs), that can inject low-energy electrons and positrons into the Milky Way and leave observable signatures in the X-ray sky. In the case of sub-GeV DM, annihilation or decay into e+e-
 contributes to the diffuse sea of cosmic-ray (CR) leptons, which can generate bremsstrahlung and inverse Compton (IC) emission on Galactic photon fields, producing a broad spectrum from X-rays to γ-rays detectable by instruments such as eROSITA and XMM-Newton.

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