Charged strange star in f(R,T) gravity with linear equation of state (original) (raw)

Our present study involves the strange stars model in the framework of f(R,T) theory of gravitation. We have taken a linear function of the Ricci scalar R and the trace T of the stress-energy tensor T_μν for the expression of f(R,T), i.e., f(R,T)=R+ 2 γ T to obtain the proposed model, where γ is a coupling constant. Moreover, to solve the hydrostatic equilibrium equations, we consider a linear equation of state between the radial pressure p_r and matter density ρ as p_r=αρ-β, where α and β are some positive constants, Both α, β depend on coupling constant γ which have been also depicted in this paper. By employing the Krori-Barua ansatz already reported in the literature [J. Phys. A, Math. Gen. 8:508, 1975] we have found the solutions of the field equations in f (R, T ) gravity. The effect of coupling constant γ have been studied on the model parameters like density, pressures, anisotropic factor, compactness, surface redshift, etc. both numerically and graphically. A suitable range...