Isolated compact star RXJ1856.5 − 3754 in f(R,T) modified gravity in Tolman-Kuchowicz spacetime

Abstract

Our main motive is to model and study the mass-radius relation of the specific isolated compact star RXJ1856.5−3754 in the background of the late time accelerated Universe and to achieve the equation of state of the core matter under stable equilibrium in f(R,T) modified gravity using Tolman-Kuchowicz metric potentials. Einstein-Hilbert action is taken as f(R,T)=R+2ξT, where R and T are the Ricci scalar and the trace of energy-momentum tensor respectively and ξ as coupling parameter. Modified Tolman-Oppenheimer-Volkoff equations are numerically solved by considering the presence of modified Chaplygin gas inside the star and also solving the corresponding field equations. We have got an explicit scenario of the structural evolution of isolated neutron stars through accelerating spacetime. Interestingly, all the derived outcomes of this investigation have become compatible with physically adopted regimes which reveal the physical viability of this current model.