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

被引:1
|
作者
Y. K. Gupta
Jitendra Pratibha
机构
[1] Indian Institute of Technology Roorkee,Department of Mathematics
来源
Astrophysics and Space Science | 2011年 / 333卷
关键词
Exact solutions; Charged fluids; Superdense stars; General relativity;
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摘要
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 2×1014 gm/cm3. The star is seen to satisfy the reality and causality conditions for 0<K≤0.045 and possesses maximum mass and radius to be 0.065216MΘ 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 1.296798MΘ and 2.6107 km respectively for the strong energy condition, while the said parameters for the weak energy condition read as 1.546269MΘ and 2.590062 km respectively.
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页码:143 / 148
页数:5
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