How does dark matter affect compact star properties and high density constraints of strongly interacting matter by Violetta Sagun et al. on Monday 21 November

We study the impact of asymmetric bosonic dark matter on neutron star

properties, including possible changes of tidal deformability, maximum mass,

radius, and matter distribution inside the star. The conditions at which dark

matter particles tend to condensate in the star's core or create an extended

halo are presented. We show that dark matter condensed in a core leads to a

decrease of the total gravitational mass and tidal deformability compared to a

pure baryonic star, which we will perceive as an effective softening of the

equation of state. On the other hand, the presence of a dark matter halo

increases those observable quantities. Thus, observational data on compact

stars could be affected by accumulated dark matter and, consequently,

constraints we put on strongly interacting matter at high densities. To confirm

the presence of dark matter in the compact star's interior, and to break the

degeneracy between the effect of accumulated dark matter and strongly

interacting matter properties at high densities, several astrophysical and GW

tests are proposed.

arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10510v1