4.7 Article

Kerr-Newman-AdS black hole surrounded by perfect fluid matter in Rastall gravity

期刊

EUROPEAN PHYSICAL JOURNAL C
卷 78, 期 6, 页码 -

出版社

SPRINGER
DOI: 10.1140/epjc/s10052-018-5991-x

关键词

-

资金

  1. National Natural Science Foundation of China [11503078, 11573060, 11661161010]

向作者/读者索取更多资源

The Rastall gravity is the modified Einstein general relativity, in which the energy-momentum conservation law is generalized to T-;mu(mu nu) = lambda R-,R-nu. In this work, we derive the Kerr-Newman-AdS (KN-AdS) black hole solutions surrounded by the perfect fluid matter in the Rastall gravity using the Newman-Janis method and Mathematica package. We then discuss the black hole properties surrounded by two kinds of specific perfect fluid matter, the dark energy (omega = - 2/3) and the perfect fluid dark matter (omega = - 1/3). Firstly, the Rastall parameter kappa lambda could be constrained by the weak energy condition and strong energy condition. Secondly, by analyzing the number of roots in the horizon equation, we get the range of the perfect fluid matter intensity alpha, which depends on the black hole mass M and the Rastall parameter kappa lambda. Thirdly, we study the influence of the perfect fluid dark matter and dark energy on the ergosphere. We find that the perfect fluid dark matter has significant effects on the ergosphere size, while the dark energy has smaller effects. Finally, we find that the perfect fluid matter does not change the singularity of the black hole. Furthermore, we investigate the rotation velocity in the equatorial plane for the KN-AdS black hole with dark energy and perfect fluid dark matter. We propose that the rotation curve diversity in Low Surface Brightness galaxies could be explained in the framework of the Rastall gravity when both the perfect fluid dark matter halo and the baryon disk are taken into account.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据