https://doi.org/10.1140/epjp/s13360-024-04868-y
Regular Article
Anisotropic ultracompact star via complete geometric deformation in f(R, T) gravity
Department of Mathematics, Division of Science and Technology, University of Education, Lahore, Pakistan
Received:
4
August
2023
Accepted:
4
January
2024
Published online:
7
February
2024
This article examines the gravastar, a peculiar stellar object under the impact of f(R, T) gravity by using a complete geometric deformation approach. With non-uniform as well as anisotropic characteristics, we develop an exact interior gravastar model that describes an ultracompact stellar structure. For the exterior domain described by the deformed Schwarzschild metric, the field equations are solved through numerical approach. A smooth matching of interior solution with the deformed Schwarzschild solution is also discussed. The graphical analysis of physical variables demonstrates that energy density possesses positive monotonically declining behavior from the center to the surface and the radial pressure exhibits negatively monotonic behavior. We analyze that all energy conditions except the strong one are met. It is concluded that the developed non-singular gravastar model is physically consistent.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.