Impacts of f(R, T) gravity on neutron stars study within the relativistic mean-field model framework in light of GW170817, Pulsars and NICER data

2024/01/02 by Premachand Mahapatra, Prasanta Kumar Das, Mahapatra, Premachand +1
Physics and Astronomy · Earth and Planetary Sciences · #Pulsars and Gravitational Waves Research #Geophysics and Gravity Measurements #High-pressure geophysics and materials

paper · pdf · doi:10.48550/arxiv.2401.01321

Abstract

In this work, we investigate the neutron star structure in conservative f(R, T) gravity with f(R, T)=R+λT, where λ denotes the matter--geometry coupling. The modified stellar structure equations are solved using realistic relativistic mean-field (RMF) equations of state (EOSs), including density-dependent linear models and nonlinear interacting models with meson self-couplings. Theoretical predictions are confronted with multimessenger constraints from heavy pulsars, NICER radius measurements, and GW170817 tidal deformability, imposing M_max≃ 2.07 M_\odot and 10.62~km

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