A Class of Charged Relativistic Superdense Star Models

被引:13
|
作者
Maurya, S. K. [1 ]
Gupta, Y. K. [1 ]
Pratibha [1 ]
机构
[1] Indian Inst Technol, Dept Math, Roorkee 247667, Uttar Pradesh, India
关键词
Reissner-Nordstrom metric; Charged fluids; Superdense star; General relativity; SCHWARZSCHILDS INTERIOR SOLUTION; ANALOGS;
D O I
10.1007/s10773-011-0968-7
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this article we obtain a new class of well behaved charged solutions by using particular forms of the metric potential g(44) and electric intensity, which involves a parameter K. The metric describing the superdense stars joins smoothly with the Reissner-Nordstrom metric at the pressure free boundary. This class of solutions describes well behaved charged fluid balls. The class of solutions gives range of parameter K (0.13 <= K <= 1.9999) for which the solution is well behaved hence, suitable for modeling of super dense star. The interior of the stars possess there energy density, pressure, pressure-density ratio and velocity of sound to be monotonically decreasing towards the pressure free interface. In view of the surface density 2 x 10(14) gm/cm(3), the maximum mass of the charged fluid balls and corresponding radius are 0.4711M(Theta) and 7.0122 km. The red shift at the centre and boundary are found to be 0.1640 and 0.1100 respectively.
引用
收藏
页码:943 / 953
页数:11
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