Bosonic dark matter in neutron stars and its effect on gravitational wave signal

We study an impact of self-interacting bosonic dark matter (DM) on various observable properties neutron stars (NSs). The analysis is performed for asymmetric DM with masses from few MeV to GeV, the self-coupling constant order $\mathcal{O}(1)$ and fractions. Allowing a mixture between baryonic matter, formation dense core or extended halo have been explored. find that both distribution regimes crucially depend mass fraction sub-GeV boson in strong coupling regime. From combined mass-radius relation tidal deformability compact including DM, we set stringent constraint fraction. conclude observations 2$M_{\odot}$ NSs together $\Lambda_{1.4}\leq580$ constraint, by LIGO/Virgo Collaboration, favour particles low fractions below $\sim 5 \%$.