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We consider the effect of density dependent dark matter on the neutron starmass, radius, and tidal deformability. Nuclear matter (normal matter) as wellas the fermionic dark matter sector is considered in a mean field model. Weadopt the two fluid formalism to investigate the effect of dark matter on theneutron star properties. In the two fluid picture, there is no directinteraction between the dark matter and the nuclear matter. Rather these twosectors interact only through gravitational interaction. The nuclear mattersector is described by the $\sigma-\omega-\rho$ meson interaction in the"FSU2R" parameterization. In the dark matter sector, we use the Bayesianparameter optimization technique to fix the unknown parameters in the darkmatter equation of state. In the two fluid picture, we solve the coupledTolman-Oppenheimer-Volkoff (TOV) equations to obtain the mass and radius ofdark matter admixed neutron stars (DANSs). We also estimate the effect of thedensity dependent dark matter sector on the tidal deformability of dark matteradmixed neutron stars (DANSs).

Dark matter admixed neutron star properties in the light of gravitational wave observations: a two fluid approach