https://doi.org/10.1140/epjp/s13360-025-06550-3
Regular Article
Gravastar models admitting Finch–Skea geometry in Rastall theory
1
Department of Mathematics, Government College Women University, Sialkot, Pakistan
2
Research Center of Astrophysics and Cosmology, Khazar University, 41 Mehseti Street, 1096, Baku, Azerbaijan
3
Department of Physics, Zhejiang Normal University, 321004, Jinhua, People’s Republic of China
4
Department of Mathematics, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
Received:
8
March
2025
Accepted:
9
June
2025
Published online:
27
June
2025
This study conducts a profound examination of the gravastar construct within the theoretical framework of Rastall theory, a gravitational paradigm that redefines the conventional conservation of energy-momentum. Conceived as a compelling alternative to black holes, a gravastar comprises a finite core enveloped by an ultra-relativistic shell and an exterior vacuum domain. By incorporating the temporal component of the Finch–Skea ansatz, we derive the radial metric potentials and undertake a meticulous analysis of their dynamical stability. The enforcement of junction conditions serves to constrain the arbitrary constants inherent in the metric formulation, ensuring both mathematical rigor and physical viability. Furthermore, a comprehensive investigation of fundamental physical attributes including total energy, entropy, proper thickness, the equation of state parameter, and surface redshift is conducted within the permissible bounds of the Rastall parameter. In the asymptotic scenario where the Rastall parameter vanishes, our formulation seamlessly converges to the classical predictions of general relativity, affirming its theoretical coherence and reinforcing its compatibility with established gravitational principles.
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 2025
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.
