Compact models with regular charge distributions
Abstract
We model a compact relativistic body with anisotropic pressures in the presence of an electric field. The equation of state is barotropic, with a linear relationship between the radial pressure and the energy density. Simple exact models of the EinsteinMaxwell equations are generated. A graphical analysis indicates that the matter and electromagnetic variables are well behaved. In particular, the proper charge density is regular for certain parameter values at the stellar center unlike earlier anisotropic models in the presence of charge. We show that the electric field affects the mass of stellar objects and the observed mass for a particular binary pulsar is regained. Our models contain previous results of anisotropic charged matter with a linear equation of state for special parameter values.
 Publication:

Astrophysics and Space Science
 Pub Date:
 February 2013
 DOI:
 10.1007/s1050901212717
 arXiv:
 arXiv:1310.0433
 Bibcode:
 2013Ap&SS.343..569M
 Keywords:

 Compact bodies;
 Relativistic stars;
 EinsteinMaxwell equations;
 General Relativity and Quantum Cosmology
 EPrint:
 26 pages, To appear in Astrophys. Space Sci