Role of antikaon condensation on the universality relations of hot and rapidly rotating neutron stars

Abstract

Abstract We study cold as well as hot neutron star (NS) at finite entropy using density dependent relativistic mean field model in the presence of nucleons and antikaon condensates. The parameters like gravitational mass(M), radius(R), moment of inertia(I) and quadrupole moment(Q) are calculated as a function of rotation frequency for a NS with fixed baryonic mass. Next, we investigate the relation of normalized I with compactness (M/R). Finally, we extend our study to calculate the tidal deformability parameter and tidal love number and show their variation with compactness.