| Autor: |
S. K. Maurya, Asifa Ashraf, Fadhila Al Khayari, G. Mustafa, M. K. Jasim |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
European Physical Journal C: Particles and Fields, Vol 84, Iss 9, Pp 1-17 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1434-6052 |
| DOI: |
10.1140/epjc/s10052-024-13334-z |
| Popis: |
Abstract In the present article, A new class of singularity-free charged anisotropic stars is derived in f(Q)-gravity regime. To solve the field equations, we assume a particular form of anisotropy along with an electric field and obtain a new exact solution in f(Q)-gravity. The explicit mathematical expression for the model parameters is derived by the smooth joining of the obtained solutions with the exterior Reissner–Nordstrom de-Sitter solution across the bounding surface of a compact star along with the requirement that the radial pressure vanishes at the boundary. We have modeled four self-gravitating pulsar objects such as LMC X-4, PSR J1903+327, PSR J1614-2230, and GW190814 in our current study and predict the radii of these objects that fall between 8 and 10 km. Furthermore, the physical validity of the solution is performed for self-gravitating object PSR J1614-2230 with mass $$1.97\pm 0.04~M_{\odot }$$ 1.97 ± 0.04 M ⊙ with radius 10 km. The solution successfully fulfills all the physical requirements along with the stability and hydrostatic equilibrium conditions for a well-behaved model. The non-metricity f(Q)-parameter $$\chi _{_1}$$ χ 1 and electric charge parameter $$\eta $$ η play an important role in the maximum mass of the objects. The maximum mass increases when $$\chi _{_1}$$ χ 1 and $$\eta $$ η increase but a non-collapsing stable object can be obtained when $$\chi _{_1}\le 0.0205$$ χ 1 ≤ 0.0205 and $$\eta \le 0.0006$$ η ≤ 0.0006 . |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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