Constraints on asymmetric dark matter from asteroseismology

Understand

We report recent results on the impact of asymmetric dark matter (DM) particles on low-mass stars.

• First, we found that the small convective core expected in stars with masses between 1.1 and 1.3 Msun is suppressed due to DM cooling.
• Moreover, stars with masses below 1 Msun have their central temperatures and densities more strongly influenced by DM than in the solar case.
• We were able to put limits to the DM mass and spin-dependent DM-proton scattering cross section by comparing the modelling of the nearby star Alpha Cen B with photometric, spectroscopic and asteroseismic observations.