"Realistic compact stars in conformal teleparallel gravity" by Gamal Nashed and Kazuharu Bamba
 

Realistic compact stars in conformal teleparallel gravity

Document Type

Article

Publication Date

9-2022

Abstract

We explore an interior solution of a physically symmetric vierbein with two unknown functions in conformal teleparallel gravity. The field equations can be described in a closed system for a particular form of the metric potentials and an appropriate anisotropic function. As a result, we find a new set of configurations consistent with observed pulsars. In particular, the boundary conditions for the interior spacetime are used for the Schwarzschild spacetime to constrain the conformal field with a unit value through the surface of a compact object. Furthermore, we apply the present model to the pulsar 4U 1608-52 with an approximate radius R = 9.52 ± 0.15 km and mass M = 1.74 ± 0.14, M. To analyze the stability, we also study the causality conditions and the adiabatic index by assuming the Tolman-Oppenheimer-Volkoff equation, an adiabatic index, and the static state. Moreover, the consistency of the model under consideration with other pulsars is investigated.

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