19-21 September 2023
Europe/Berlin timezone

X-rays constraints on sub-GeV Dark Matter

20 Sep 2023, 11:20
Nachrichtentechnik-Hörsaal (NTI) (KIT)

Nachrichtentechnik-Hörsaal (NTI)


Engesserstraße 5, 76131 Karlsruhe


Jordan Koechler (LPTHE - Sorbonne Université)


In this talk, I will present updated constraints on 'light' dark matter (DM) particles with masses between 1 MeV and 5 GeV. In this range, we can expect DM-produced $e^\pm$ pairs to upscatter ambient photons in the Milky Way via Inverse Compton, and produce a flux of X-rays that can be probed by a range of space observatories. Using diffuse X-ray data from XMM-Newton, INTEGRAL, NuSTAR and Suzaku, we compute the strongest constraints to date on annihilating DM for 200 MeV < $m_\rm{DM}$ < 5 GeV and decaying DM for 100 MeV < $m_\rm{DM}$ < 5 GeV. I will also discuss possible future developments of these results and this technique.

Primary author

Jordan Koechler (LPTHE - Sorbonne Université)

Presentation Materials

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