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Analysis of charged compact stars with Bardeen black hole in f(,) gravity.

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Title: Analysis of charged compact stars with Bardeen black hole in f(,) gravity.
Authors: Sharif, M.1,2 (AUTHOR) msharif.math@pu.edu.pk, Ibrar, Iqra1 (AUTHOR) iqraibrar26@gmail.com
Source: International Journal of Geometric Methods in Modern Physics. Jun2026, Vol. 23 Issue 7, p1-22. 22p.
Subjects: Compact objects (Astronomy), Stellar structure, Black holes, Tensor algebra
Abstract: This study investigates the behavior of charged compact stars within the f (,) gravitational framework, where denotes the non-metricity scalar and represents the trace of the energy–momentum tensor. Recognized as a promising model for explaining the accelerated expansion of the universe, this approach offers a strong theoretical foundation. A central focus of this research is the application of Bardeen's model to describe the exterior spacetime. Additionally, the study examines the internal structure of compact stars using a solution based on the Finch–Skea metric potential. Various physical properties, including energy density, pressure components, anisotropy, energy conditions and equation of state parameters are analyzed through graphical representations. Equilibrium conditions are explored via the Tolman–Oppenheimer–Volkoff equation while key characteristics such as the mass–radius relationship, compactness, surface redshift and stability criteria based on the causality condition and adiabatic index are thoroughly evaluated. The analysis concludes that the proposed solutions for charged compact stars in this framework are both theoretically consistent and physically valid. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:This study investigates the behavior of charged compact stars within the f (,) gravitational framework, where denotes the non-metricity scalar and represents the trace of the energy–momentum tensor. Recognized as a promising model for explaining the accelerated expansion of the universe, this approach offers a strong theoretical foundation. A central focus of this research is the application of Bardeen's model to describe the exterior spacetime. Additionally, the study examines the internal structure of compact stars using a solution based on the Finch–Skea metric potential. Various physical properties, including energy density, pressure components, anisotropy, energy conditions and equation of state parameters are analyzed through graphical representations. Equilibrium conditions are explored via the Tolman–Oppenheimer–Volkoff equation while key characteristics such as the mass–radius relationship, compactness, surface redshift and stability criteria based on the causality condition and adiabatic index are thoroughly evaluated. The analysis concludes that the proposed solutions for charged compact stars in this framework are both theoretically consistent and physically valid. [ABSTRACT FROM AUTHOR]
ISSN:02198878
DOI:10.1142/S021988782550207X