Modeling Charged Strange Stars in Rastall Gravity

Recent research by Pramit Rej presents a model of a charged strange star within the framework of Rastall gravity, specifically addressing the interaction of dark energy with compact stellar objects. The study, titled "Charged analog of anisotropic dark energy star in Rastall gravity," was submitted to arXiv on April 21, 2024, and revised on August 26, 2024. The model focuses on the strange star Her X-1, which has a mass of approximately 0.85 solar masses and a radius of about 8.1 kilometers.

The research explores how dark energy, which is known to drive the accelerated expansion of the universe, could influence the stability and structure of compact stars. By employing a specific equation of state that relates dark energy density to isotropic fluid matter-energy density, the study aims to develop a simplified model that can describe the physical properties of such stars.

Key findings include a detailed analysis of the mass-radius relationship, pressure, density, and metric functions of the proposed stellar configuration. The study also investigates the stability and equilibrium of the model, revealing that it is singularity-free and meets the necessary stability criteria for a viable stellar model. This work contributes to the understanding of how dark energy might interact with compact stellar objects, potentially impacting theories of stellar evolution and the fate of such stars in the universe.

The full paper can be accessed at arXiv:2404.13538.