Conveners
Dark Matter
- Diego Blas (UAB/IFAE)
Dark Matter
- Diego Blas (UAB/IFAE)
We 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 pairs to upscatter low-energy ambient photons in the Milky Way via the Inverse Compton process, 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 and realistic cosmic-ray...
Sub-GeV dark matter (DM) has been gaining significant interest in recent years, since it can account for the thermal relic abundance while evading nuclear recoil direct detection constraints. However, sub-GeV DM is still subject to a number of constraints from laboratory experiments, and from astrophysical and cosmological observations. In this work, we compare these observations with the...
In the high mass range, primordial black holes are constrained by the observed velocity dispersion of the Galactic disk, as they are expected to heat up stars through two-body encounters. These constraints have been obtained assuming that the PBHs are smoothly distributed in the DM halo. However, PBHs are expected to form bound structures under the effect of gravity; furthermore, it has been...
Sterile neutrinos represent a minimal and well motivated extension of the Standard Model (SM). For masses at the keV scale, their mixing to the active neutrinos offers a minimal explanation of the dark matter (DM) density. The very same mixing inevitably leads to radiative photon emission and the non-observation of such peaked X-ray lines virtually rules out this minimal sterile neutrino DM...
