19 research outputs found
Central Density Dependent Anisotropic Compact Stars
Stars can be treated as self-gravitating fluid. In this connection, we
propose a model for an anisotropic star under the relativistic framework of
Krori-Barua (1975) spacetime. It is shown that the solutions are regular and
singularity free. The uniqueness of the model is that interior physical
properties of the star solely depend on the central density of the matter
distribution
Analytical model of strange star in the low-mass X-ray binary 4U 1820-30
In this article, we have proposed a model for a realistic strange star under
Tolman VII metric\citep{Tolman1939}. Here the field equations are reduced to a
system of three algebraic equations for anisotropic pressure. Mass, central
density and surface density of strange star in the low-mass X-ray binary 4U
1820-30 has been matched with the observational data according to our model.
Strange materials clearly satisfies the stability condition (i.e. sound
velocities < 1) and TOV-equation. Here also surface red shift of the star has
been found to be within reasonable limit.Comment: Some revisions have been made. Accepted in Eur.Phys.J.