Anisotropic Compact stars with variable cosmological constant

Details Anisotropic Compact stars with variable cosmological constant Anisotropic Compact stars with variable cosmological constant

2012-04-16

arxiv.org/abs/1204.3558v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 8 figures

Scientific paper

Recently the small value of the cosmological constant and its ability to accelerate the expansion of the Universe is of great interest. We discuss the possibility of forming of anisotropic compact stars from this cosmological constant as one of the competent candidates of {\it dark energy}. For this purpose we consider the analytical solution of Krori and Barua metric. We take the radial dependence of cosmological constant and check all the regularity conditions, TOV equations, stability and surface redshift of the compact stars. It has been shown as conclusion that this model is valid for any compact star and we have cited $4U~1820-30$ as a specific example of that kind of star.

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