A new model for dark matter fluid sphere

Abstract

We develop a new model for a spherically symmetric dark matter fluid sphere containing two regions: {\bf (i)} Isotropic inner region with constant density and {\bf (ii)} Anisotropic outer region. We solve the system of field equation by assuming a particular density profile along with a linear equation of state. The obtained solutions are well-behaved and physically acceptable which represent equilibrium and stable matter configuration by satisfying the TOV equation and causality condition, condition on adiabatic index, Harrison-Zeldovich-Novikov criterion, respectively. We consider the compact star EXO 1785-248 (Mass $M=1.3M_{\odot }$ and radius $R=8.8km.$) to analyze our solutions by graphical demonstrations.

11 pages, 11 figures, 2 tables. Accepted in Mod.Phys.Lett.A

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Cited by in corpus (1)

• Lyapunov exponent ISCO and Kolmogorov Senai entropy for Kerr Kiselev black hole