Compact Stars with Modified Gauss–Bonnet Tolman–Oppenheimer–Volkoff Equation
| Autor: | Tayyaba Naz, M. F. Shamir |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Gravity (chemistry) General Physics and Astronomy Context (language use) 01 natural sciences law.invention Stars Gauss–Bonnet theorem law 0103 physical sciences Tolman–Oppenheimer–Volkoff equation Neutron Hydrostatic equilibrium 010306 general physics Constant (mathematics) Mathematical physics |
| Zdroj: | Journal of Experimental and Theoretical Physics. 128:871-877 |
| ISSN: | 1090-6509 1063-7761 |
| DOI: | 10.1134/s1063776119050054 |
| Popis: | We study compact stars for f( $$\mathcal{G}$$ ) gravity model using modified Tolman–Oppenheimer–Volkoff equation. Firstly, the hydrostatic equilibrium equations have been developed in the context of f( $$\mathcal{G}$$ ) gravity. Secondly, the profiles of energy density, pressure and mass of stars are investigated through two different equations of state models, p = ωρ5/3 and p = a(ρ – 4b), ρ being the energy density, ω, a and b are the specific constants. For f( $$\mathcal{G}$$ ) = α $${{\mathcal{G}}^{2}}$$ model with α being an arbitrary constant, the physical attributes of the compact objects have been discussed for the different values of model parameter α. It is concluded that in the framework of f( $$\mathcal{G}$$ ) gravity, neutron and strange stars follow physically accepted patterns and the results agree with those already available in literature. |
| Databáze: | OpenAIRE |
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