Bosonic Dark Matter in Neutron Stars and its Effect on Gravitational Wave Signal

Understand

We study an impact of self-interacting bosonic dark matter (DM) on various observable properties of neutron stars (NSs).

• The analysis is performed for asymmetric DM with masses from few MeV to GeV, the self-coupling constant of order $\mathcal{O}(1)$ and various DM fractions.
• Allowing a mixture between DM and baryonic matter, the formation of a dense DM core or an extended dark halo have been explored.
• We find that both distribution regimes crucially depend on the mass and fraction of DM for sub-GeV boson masses in the strong coupling regime.