Relativistic tidal properties of superfluid neutron stars

We investigate the tidal deformability of a superfluid neutron star. We calculate the equilibrium structure in the general relativistic two-fluid formalism with entrainment effect where we take neutron superfluid as one fluid and the other fluid is comprised of protons and electrons, making it a charge neutral fluid. We use a relativistic mean field model for the equation of state of matter where the interaction between baryons is mediated by the exchange sigma, omega, and rho mesons. Then, we study the linear, static l = 2 perturbation on the star to compute the electric-type Love number following Hinderer's prescription.