A study on charged compact stars
Abstract
In this paper, the Einstein-Maxwell spacetime is considered for compact stellar system. To find out solutions of the field equations, we adopt a finite and positive well-behaved metric potential. Under this particular choice, we therefore develop the expressions of the physical features, such as mass, charge, density and pressure, for stellar system in embedding class 1 spacetime. It is observed that all these features are physically viable. In the model, some known compact stars, viz. 4U 1820-30, 4U 1608-52 and EXO 1745-248 (I) & (II) are studied successfully through physical analysis. It is also interesting to note that the obtained set of regular solutions to the Einstein-Maxwell equations represents an electromagnetic mass model for isotropic fluid without invoking any negative pressure.
- Publication:
-
International Journal of Modern Physics D
- Pub Date:
- 2019
- DOI:
- 10.1142/S0218271819500536
- Bibcode:
- 2019IJMPD..2850053M
- Keywords:
-
- Anisotropic fluid;
- general relativity;
- exact solution;
- astrophysical compact stars;
- 04.20.Cv;
- 04.40.Nr;
- 04.20.Jb;
- 04.40.Dg;
- Fundamental problems and general formalism;
- Einstein-Maxwell spacetimes spacetimes with fluids radiation or classical fields;
- Exact solutions;
- Relativistic stars: structure stability and oscillations