Impact of a variable cosmological constant on stellar matter configurations in Finch-Skea spacetime.
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| Title: | Impact of a variable cosmological constant on stellar matter configurations in Finch-Skea spacetime. |
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| Authors: | Ilyas, M.1 (AUTHOR) ilyas_mia@yahoo.com, Maha2 (AUTHOR) maha.official00@gmail.com, Nawaz, Salma1 (AUTHOR) salma_nawaz53@yahoo.com, Sher, Falak3 (AUTHOR) falaks2@illinois.edu, Khan, Fawad1 (AUTHOR) fawad.ccms@gmail.com |
| Source: | Astrophysics & Space Science. May2025, Vol. 370 Issue 5, p1-11. 11p. |
| Subjects: | Stellar structure, Cosmological constant, Compact objects (Astronomy), Stars, Spacetime |
| Abstract: | In this study, a variable cosmological constant model is created for anisotropic star structures, which satisfies the remaining physical requirements, and validates the required energy conditions (Ecs), and TOV equations. First, the Finch-Skea spacetime solution is taken into account as a static spherically symmetric metric. Moreover, external Schwarzschild geometry is taken into account to correlate our internal stellar structure and determine the values of the constants used in the Finch-Skea spacetime solution. Finally, in this paper, multiple aspects are discussed, such as the radius, compactness, stresses, stability, density profile, and masses under the variable cosmological constant model in f (R , T) gravity for various stars. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | In this study, a variable cosmological constant model is created for anisotropic star structures, which satisfies the remaining physical requirements, and validates the required energy conditions (Ecs), and TOV equations. First, the Finch-Skea spacetime solution is taken into account as a static spherically symmetric metric. Moreover, external Schwarzschild geometry is taken into account to correlate our internal stellar structure and determine the values of the constants used in the Finch-Skea spacetime solution. Finally, in this paper, multiple aspects are discussed, such as the radius, compactness, stresses, stability, density profile, and masses under the variable cosmological constant model in f (R , T) gravity for various stars. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 0004640X |
| DOI: | 10.1007/s10509-025-04435-6 |
