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February 22, 2026International Journal of Geometric Methods in Modern Physics0 citations

Stable, Charged, and Anisotropic: Compact Stars in f(R, ø, X) Gravity

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AAA. K. AlthukairASAttiya ShafaqAAA. K. Althukair

Key Points

  • This analysis aims to understand the behavior and stability of charged anisotropic compact stars in the context of f(R, ø, X) modified gravity.
  • Considered static spherically symmetric spacetime for compact stars
  • Used Adler-type metric potential and determined the g rr component via Karmarkar condition
  • Evaluated physical properties like energy density and pressures
  • Analyzed stability using adiabatic index and equilibrium conditions
  • Investigated graphical behavior of energy conditions with Bardeen exterior geometry.
  • Models demonstrate physical stability and viability
  • Compact stars show singularity-free structures
  • Parameters like mass function, compactness factor, and redshift function were analyzed graphically.

Abstract

The aim of the present work is to explore the behavior of charged, anisotropic compact spheres within the framework of f(R; ø,X) modified gravity, where R, ø, and X represent the Ricci scalar, scalar field, and kinetic term, respectively. In this work, we consider a static spherically symmetric spacetime to investigate the nature of compact stars. Moreover, we take the g tt metric potential to be of an Adler-type ansatz, which leads to a broader family of solutions. The corresponding g rr component is then determined analytically via the Karmarkar condition. We also choose Bardeen geometry as the exterior spacetime to determine the constants. This study evaluates the physical properties of compact stars, such as energy density, radial pressure, tangential pressure, anisotropy, and equation-of-state parameters. We analyze the stability of compact stars using the adiabatic index and equilibrium conditions, which indicate that our models are stable. Furthermore, we examine the graphical behavior of the energy conditions and find that the considered stars are viable. Additional properties of compact stars, such as the mass function, compactness factor, and redshift function, are investigated through graphical representations. Our analysis demonstrates that the resulting stellar model is physically stable, viable, and singularity-free.

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Cite This Study

Althukair et al. (2026) studied this question.

synapsesocial.com/papers/699a9d7a482488d673cd36c5https://doi.org/10.1142/s0219887826501793
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