Relativistic anisotropic charged fluid spheres with varying cosmological constant

Ray, Saibal; Bhadra, Sumana; Sengupta, Anand S.

Relativistic anisotropic charged fluid spheres with varying cosmological constant

Authors

Ray, Saibal

Bhadra, Sumana

Sengupta, Anand S.

Description

Static spherically symmetric anisotropic source has been studied for the Einstein-Maxwell field equations assuming the erstwhile cosmological constant $ Λ$ to be a space-variable scalar, viz., $ Λ= Λ(r) $. Two cases have been examined out of which one reduces to isotropic sphere. The solutions thus obtained are shown to be electromagnetic in origin as a particular case. It is also shown that the generally used pure charge condition, viz., $ ρ+ p_r = 0 $ is not always required for constructing electromagnetic mass models.
15 pages, 3 eps figures