论文标题
克尔黑洞被弦云及其弱重力镜头包围
Kerr black hole surrounded by a cloud of strings and its weak gravitational lensing in Rastall gravity
论文作者
论文摘要
在本文中，由Newman-Janis算法在没有复合化的情况下获得了一个被rastall Gravity中的弦线包围的Kerr黑洞的精确解决方案，并研究了字符串参数$ A_0 $对黑洞热力学的影响。此外，根据这种黑洞溶液，我们研究了字符串云对大型颗粒重力偏转的影响。对于接收器和距离镜头对象无限距离的源，我们使用示波器的Riemannian歧管方法。虽然距离是有限的，但我们采用了广义的雅各比公制方法。对于两种情况之间的案例，采用了Jacobi-Maupertuis Randers-Finsler指标和高斯定理。我们发现字符串参数$ a_0 $显然对大型颗粒的重力偏转有修改。我们的结果被Kerr黑洞降低到光线的偏转角，周围是一连串的相对论。
In this paper, an exact solution of Kerr black hole surrounded by a cloud of strings in Rastall gravity is obtained by Newman-Janis algorithm without complexification, and the influence of the string parameter $a_0$ on the black hole thermodynamics is studied. Furthermore, according to this black hole solution, we investigate the effect of a cloud of strings on gravitational deflection of massive particles. For a receiver and a source at infinite distance from the lens object, we use an osculating Riemannian manifold method. While the distance is finite, we apply the generalized Jacobi metric method. For the case between the two situations, the Jacobi-Maupertuis Randers-Finsler metric and Gauss-Bonnet theorem are employed. We find that the string parameter $a_0$ has obviously modification on the gravitational deflection of massive particles. Our result is reduced to the deflection angle of light by Kerr black hole surrounded by a cloud of strings in general relativity.
