当前位置: X-MOL 学术Phys. Dark Universe › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Strong deflection gravitational lensing for photon coupled to Weyl tensor in a charged Kiselev black hole
Physics of the Dark Universe ( IF 5.0 ) Pub Date : 2020-11-21 , DOI: 10.1016/j.dark.2020.100750
G. Abbas , Asif Mahmood , M. Zubair

Strong deflection gravitational lensing is investigated for photon coupled to Weyl tensor in a charged Kiselev black hole, and its observables have been found. We get the asymptotically flat solutions, for the appropriate range of the equation of state parameter ω̃. Constructing the action corresponding to the electromagnetic field coupled to Weyl tensor, the equation of motion for the photon coupled to Weyl tensor in the curved background of the black hole is derived, which leads to the light cone conditions. It is found that gravitational lensing depends not only on the coupling with Weyl tensor and the polarization direction, but also on the effective charge of the black hole. The critical values for coupling parameter are also found for the existence of the circular photon orbit outside the black hole event horizon. By taking, the supermassive black holes, SgrA, and M87 in the Galactic Center and as lenses, we have estimated these observables and analyzed the possibility of detecting the quantum improvement.



中文翻译:

强光偏转引力透镜,用于在带电的Kiselev黑洞中耦合到Weyl张量的光子

研究了在带电的Kiselev黑洞中耦合到Weyl张量的光子的强偏转引力透镜,并发现了可观察到的结果。对于状态参数方程的适当范围,我们得到渐近平的解ω̃。通过构造与耦合到Weyl张量的电磁场相对应的作用,推导了在黑洞弯曲背景下耦合到Weyl张量的光子的运动方程,这导致了光锥条件。发现引力透镜不仅取决于与Weyl张量的耦合和极化方向,而且取决于黑洞的有效电荷。对于黑洞事件视界之外圆形光子轨道的存在,还找到了耦合参数的临界值。通过拍摄超大质量的黑洞,小号G[R一种中号87 在银河系中心以及作为透镜,我们已经估计了这些可观察到的事物,并分析了检测量子改进的可能性。

更新日期:2020-11-23
down
wechat
bug