2025/09/02 by M. Sharif, M. A. R. Sharif, Tayyab Naseer +1 · 1 citation
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · Physics and Astronomy · #Classical mechanics #Computer science #Geomagnetism and Paleomagnetism Studies #Geophysics and Gravity Measurements #Physics #Solar and Space Plasma Dynamics #Stability (learning theory) #Theoretical physics
paper · doi:10.1088/1572-9494/ae0158
published in Communications in Theoretical Physics 78(2), 025406 (Institute of Physics)
openalex publication_date 2025/09/02 · crossref created 2025/09/02 · crossref issued 2025/10/01 · crossref published 2025/10/01 · crossref published-online 2025/10/01 · crossref deposited 2025/10/01 · openalex created_date 2025/10/10 · crossref published-print 2026/02/01 · crossref indexed 2026/08/04 · openalex updated_date 2026/08/05
Abstract This study examines the effect of charge on physical features of a gravastar model in the framework of Rastall gravity. A gravastar is an alternative model to a black hole consisting of three separate regions: the inner sector, the intermediate shell and the outer sector. Different values of the barotropic equation of state (EoS) parameter provide the mathematical basis for these regions. Field equations (FEs) are initially developed for a spherically symmetric spacetime coupled with charged matter distribution. We then use the temporal component of Tolman IV spacetime to formulate the radial metric potential for both the inner region and intermediate shell. We also apply the matching criteria to ensure smooth matching of exterior and interior spacetimes so that the constants resulting from integrations can be determined. Afterwards, we explore various physical properties of the developed gravastar model such as the proper length, entropy, energy, and others to analyze how shell thickness and charge affect them. It is concluded that, in the background of Rastall theory, a gravastar model exists and serves as a viable alternative to the black hole.