Relativistic model of an anisotropic star with Bose-Einstein dark matter density profile in f(T) gravity

This article presents a new model for anisotropic compact stars that are confined to physical dark matter in the background of f ( T ) teleparallel gravity. The model is based on the equation of state (EoS) of the bag model type and the Bose-Einstein dark matter density profile. The derived solutions meet the energy conditions, the causality conditions, and the required conditions on the stability factor and adiabatic index, indicating that they are physically well-behaved and represent the physical and stable matter configuration. We also determine the maximum mass, surface redshift, and compactness parameter at the surface. Interestingly, all of these numbers fall within the specified range, supporting the physical viability of our proposal. Additionally, the various masses that are derived for varying the model parameter k correspond to five compact, realistic compact objects, including LMC X-4, Her X-1, 4U 1538-52, SAX J1808.4-3658, and Cen X-3. We have also illustrated the radially symmetric profiles of energy density and the moment of inertia for non-rotating stars.

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Publication Details

Journal
Nuclear Physics B
Published
2025-02-06
DOI
https://doi.org/10.1016/j.nuclphysb.2025.116819
Citations
2
Primary Topic
Cosmology and Gravitation Theories
Type
article
Field-Weighted Citation Impact
2.31
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article

Relativistic model of an anisotropic star with Bose-Einstein dark matter density profile in f(T) gravity

Surajit Chattopadhyay, Prabir Rudra, Samprity Das
2 citations
Nuclear Physics B
Cosmology and Gravitation Theories
2.31
article

Relativistic model of an anisotropic star with Bose-Einstein dark matter density profile in f(T) gravity

Surajit Chattopadhyay, Prabir Rudra, Samprity Das
article en
2 citations

Abstract

This article presents a new model for anisotropic compact stars that are confined to physical dark matter in the background of f ( T ) teleparallel gravity. The model is based on the equation of state (EoS) of the bag model type and the Bose-Einstein dark matter density profile. The derived solutions meet the energy conditions, the causality conditions, and the required conditions on the stability factor and adiabatic index, indicating that they are physically well-behaved and represent the physical and stable matter configuration. We also determine the maximum mass, surface redshift, and compactness parameter at the surface. Interestingly, all of these numbers fall within the specified range, supporting the physical viability of our proposal. Additionally, the various masses that are derived for varying the model parameter k correspond to five compact, realistic compact objects, including LMC X-4, Her X-1, 4U 1538-52, SAX J1808.4-3658, and Cen X-3. We have also illustrated the radially symmetric profiles of energy density and the moment of inertia for non-rotating stars.

Nuclear Physics BVol. 1012
Indian Institute of Engineering Science and Technology, Shibpur (IN)
Openalex Percentile: Top 13%
Cosmology and Gravitation Theories
2.31
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Relativistic model of an anisotropic star with Bose-Einstein dark matter density profile in f(T) gravity — Surajit Chattopadhyay, Prabir Rudra, et al. · Nuclear Physics B (2025) | TGRS Research Map | TGRS