| Name: SOURAV BISWAS |
| Affiliation: COOCH BEHAR PANCHANAN BARMA UNIVERSITY |
| Conference ID: ASI2026_765 |
| Title: Maximum mass of singularity-free anisotropic compact stars in Rastall theory of gravity |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Sourav Biswas(IUCAA Centre for Astronomy Research and Development (ICARD), Department of Physics, Cooch Behar Panchanan Barma University), Debadri Bhattacharhee(IUCAA Centre for Astronomy Research and Development (ICARD), Department of Physics, Cooch Behar Panchanan Barma University), Pradip Kumar Chattopadhyay(IUCAA Centre for Astronomy Research and Development (ICARD), Department of Physics, Cooch Behar Panchanan Barma University) |
| Abstract: This research investigates the properties of spherically symmetric anisotropic compact stars within the framework of Rastall gravity. By adopting the Krori-Barua metric ansatz, the study derives a set of singularity-free, relativistic solutions to the Einstein’s field equations that remain analytically tractable. All the physical parameters pertaining to the stellar model remain well-behaved. Within this geometry, the best fit equation of state is derived by maximizing the sound velocity at the stellar centre. Through a numerical treatment of the Tolman-Oppenheimer-Volkoff (TOV) equation, the model identifies the maximum mass and corresponding radius of compact objects. Notably, the model yields maximum masses ranging from $2.24~M_{\odot}$ to $2.36~M_\odot$, with corresponding radii between $9.48$ km and $10.15$ km. Furthermore, the causality, energy conditions and necessary stability criteria are well satisfied which validate the physical acceptability of the present model within the framework of Rastall theory of gravity. The radii of different compact stars may be predicted from the model which are in good agreement with the results obtained from the recent observations. |
