Charged compact star in $f(R,T)$ gravity in Tolman-Kuchowicz spacetime

Abstract

In this current study, our main focus is to model a specific charged compact star SAX J 1808.4-3658 (M = 0.88 $M_{\odot }$,\, R = 8.9 km) within the realm of $f(R,T)$ modified gravity theory using the metric potentials proposed by Tolman-Kuchowicz (Tolman, Phys Rev 55:364, 1939; Kuchowicz Acta Phys Pol 33:541, 1968) and the interior spacetime is matched to the exterior Reissner-Nordström line element at the surface of the star. Tolman-Kuchowicz metric potentials provide a singularity-free solution which satisfies the stability criteria. Here we have used the simplified phenomenological MIT bag model equation of state (EoS) to solve Einstein-Maxwell field equations where the density profile ($\rho$) is related to the radial pressure ($p_r$) as $p_r(r)=(\rho -4B_g)/3$. Further, to derive the values of unknown constants $a,b,B,C$ and the bag constant $B_g$, we match our interior space-time to the exterior Reissner-Nordström line element at the surface of stellar system. In addition to this, to check the physical validity and stability of our suggested model, we evaluate some important properties such as effective energy density, effective pressures, radial and transverse sound velocities, relativistic adiabatic index, all energy conditions, compactness factor and surface redshift. It is depicted from our current study that all our derived results lie within the physically accepted regime which provides the viability of our present model in the context of $f(R,T)$ modified gravity.

15 Pages

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Cited by in corpus (13)

• Dark Energy Stars in Tolman-Kuchowicz spacetime in the context of Einstein Gravity
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• Stable and self consistent charged gravastar model within the framework of $f(R,T)$ gravity
• Effects of Non-minimal Matter-geometry Coupling on Embedding Class-one Anisotropic Solutions
• Moment of inertia of slowly rotating anisotropic neutron stars in $f(R,T)$ gravity
• Tolman IV fluid sphere in f(R, T) gravity
• Decoupled Anisotropic Buchdahl's Relativistic Models in $f(\mathbb{R},\mathbb{T})$ Theory
• Finch-Skea star model in f(R, T ) theory of gravity
• Charged Anisotropic Tolman IV Solution in Matter-Geometry Coupled Theory
• Study of Viable Compact Stellar Structures in Non-Riemannian Geometry
• Kuchowicz gravastars in the braneworld formalism
• Relativistic compact stars in Tolman spacetime via an anisotropic approach
• Hybrid star within $f(\mathcal{G})$ gravity