Stable charged gravastar model in cylindrically symmetric space-time

被引:6
|
作者
Bhattacharjee, D. [1 ]
Chattopadhyay, P. K. [1 ]
机构
[1] Coochbehar Panchanan Barma Univ, UCAA Ctr Astron Res & Dev ICARD, Dept Phys, Vivekananda St, Cooch Behar 736101, West Bengal, India
关键词
charged gravastar; cylindrically symmetric spacetime; thin shell; entropy; NEUTRON-STAR; COSMOLOGICAL CONSTANT; MODIFIED GRAVITY; THIN SHELLS; EQUATION; PARAMETERS; WORMHOLES; MAXIMA-1; UNIVERSE; LAMBDA;
D O I
10.1088/1402-4896/ace483
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper, we have extended the idea of gravitational Bose-Einstein condensate star (gravastar) to charged gravastar system and explored the role of charge in gravastar formation and its properties. We have used the most general line element in cylindrically symmetric space-time. In this approach, the existence of singularity at the center of gravastar is removed and the event horizon is replaced by the thin shell approximation. The proper length of the shell is calculated along with the energy of the thin shell in presence of charge. The entropy calculation shows that the entropy of the configuration is smaller than that of a quasi-black hole system and even smaller than that of a classical black hole. Unlike black hole, the gravastar system is a stable configuration and in our approach, there is no information paradox.
引用
收藏
页数:12
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