# Central density dependent anisotropic compact stars

@article{Kalam2013CentralDD, title={Central density dependent anisotropic compact stars}, author={Mehedi Kalam and Farook Rahaman and Sk. Monowar Hossein and Saibal Ray}, journal={The European Physical Journal C}, year={2013}, volume={73}, pages={1-6} }

Stars can be treated as a self-gravitating fluid. In this connection, we propose a model for an anisotropic star under the relativistic framework of Krori and Barua (J. Phys. A, Math. Gen. 8:508, 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.

## 57 Citations

An Analysis of Charged Anisotropic Star with de Sitter Spacetime

- Physics
- 2016

We propose a model for charged anisotropic star in de Sitter spacetime. We have taken Krori and Barua (J. Phys. A, Math. Gen. 8, 508, 1975) metric in de Sitter spacetime with non-zero cosmological…

Anisotropic compact stars in f(T) gravity

- Physics
- 2014

This paper deals with the theoretical modeling of anisotropic compact stars in the framework of f(T) theory of gravity, where T is torsion scalar. To this end, we have used the exact solutions of…

Anisotropic compact stars in f(G) gravity

- Physics
- 2015

This paper is devoted to study the possibility of forming anisotropic compact stars in modified Gauss–Bonnet, namely called as f(G) theory of gravity which is one of the strong candidates,…

A study of anisotropic spheres in f(Q) gravity with quintessence field

- PhysicsPhysics of the Dark Universe
- 2021

Anisotropic compact stars in the Buchdahl model: A comprehensive study

- PhysicsPhysical Review D
- 2019

In this article, we present a class of relativistic solutions describing spherically symmetric and static anisotropic stars in hydrostatic equilibrium. For this purpose, we consider a particularized…

A new class of relativistic model of compact stars of embedding class I

- Physics
- 2017

In the present paper, we have constructed a new relativistic anisotropic compact star model having a spherically symmetric metric of embedding class one. Here we have assumed an arbitrary form of…

Charged compact star model in Einstein-Maxwell-Gauss-Bonnet gravity

- PhysicsAstrophysics and Space Science
- 2019

In this paper we present a model of a static charged anisotropic fluid sphere in the Einstein-Maxwell-Gauss-Bonnet (EMGB) theory of gravitation. We utilize the Krori-Barua (KB) ansatz together with a…

Rainbow’s stars

- Physics
- 2016

In recent years, a growing interest in the equilibrium of compact astrophysical objects like white dwarf and neutron stars has been manifested. In particular, various modifications due to…

Relativistic anisotropic models for compact star with equation of state p = f(ρ)

- Physics
- 2017

We present new anisotropic models for Buchdahl [H. A. Buchdahl, Phys. Rev. 116 (1959) 1027.] type perfect fluid solution. For this purpose, we started with metric potential eλ same as Buchdahl [H. A.…

## References

SHOWING 1-10 OF 34 REFERENCES

Anisotropic strange star with de Sitter spacetime

- Physics
- 2012

Stars can be treated as self-gravitating fluid. Krori and Barua (J. Phys. A., Math. Gen. 8:508, 1975) gave an analytical solution to that kind of fluids. In this connection, we propose a de Sitter…

Anisotropic Compact stars with variable cosmological constant

- Physics
- 2012

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…

Singularity-free dark energy star

- Physics
- 2011

We propose a model for an anisotropic dark energy star where we assume that the radial pressure exerted on the system due to the presence of dark energy is proportional to the isotropic perfect fluid…

The Character of an Anisotropic and Spherically Symmetric Star in the Presence of a Cosmological Constant

- Physics
- 2009

From the gravitational structure equations of an anisotropic and spherically symmetric star in the presence of a cosmological constant, we derive the inequality which limits the mass-radius ratio,…

Strange stars in Krori–Barua space-time

- Physics
- 2012

The singularity free space-time metric obtained by Krori and Barua (J. Phys. A, Math. Gen. 8:508, 1975) satisfies the physical requirements of a realistic star. Consequently, we explore the…

Some consequences of a spatially varying cosmological constant in a spherically symmetric distribution of matter

- Physics
- 1991

This paper investigates the effects of the spatial variation of the cosmological constant λ on the spacetime geometry within and outside a massive object. It is seen that the variation of λ with the…

MAXIMUM MASS–RADIUS RATIO FOR COMPACT GENERAL RELATIVISTIC OBJECTS IN SCHWARZSCHILD–DE SITTER GEOMETRY

- Physics
- 2000

Upper limits for the mass–radius ratio are derived for arbitrary general relativistic matter distributions in the presence of a cosmological constant. General restrictions for the redshift and total…

Strange stars and the cosmological constant problem

- Physics
- 2007

The cosmological constant problem represents an evident tension between our present description of gravity and particle physics. Many solutions have been proposed, but experimental tests are always…

Neutrino trapping in extremely compact objects described by the internal Schwarzschild-(anti-)de Sitter spacetimes

- Physics
- 2012

Extremely compact stars (ECS) (having radius R < 3GM/c2) contain captured null geodesics. Certain part of neutrinos produced in their interior will be trapped, influencing thus their neutrino…