A new class of charged analogues of Vaidya-Tikekar type super-dense star

作者：Gupta Y K; Pratibha; Kumar Jitendra^*

来源：Astrophysics and Space Science, 2011, 333(1): 143-148.

DOI：10.1007/s10509-010-0561-1

• Exact solutions
• Charged fluids
• Superdense stars
• General relativity

First ever closed form solution for charged fluid sphere expressed by a space time with its hypersurfaces t= constant as spheroid is obtained for the case 0 < K < 1. The same is utilized to construct a superdense star with surface density 2x10(14) gm/cm(3). The star is seen to satisfy the reality and causality conditions for 0 < K <= 0.045 and possesses maximum mass and radius to be 0.065216M (I similar to) and 1.137496 km respectively. Moreover the interior of the star satisfy strong energy condition. However in the absence of the causality condition, the reality conditions are valid for a wider range 0 < K <= 0.13. The maximum mass and radius for the later case are 1.296798M (I similar to) and 2.6107 km respectively for the strong energy condition, while the said parameters for the weak energy condition read as 1.546269M (I similar to) and 2.590062 km respectively.

• 出版日期2011-5