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Gravitational lensing effect in traversable wormholes
Annals of Physics ( IF 3.0 ) Pub Date : 2021-04-21 , DOI: 10.1016/j.aop.2021.168460
Nisha Godani , Gauranga C. Samanta

The present paper is intended for studying the effect of strong gravitational lensing in the context of charged wormhole. To study this effect, the conditions determining the existence of photon spheres at and outside the throat are obtained. The necessary and sufficient conditions for the existence of photon spheres at or outside the throat of the charged wormhole is derived. Furthermore, photon spheres are investigated in three cases for three different forms of redshift function. These three cases include the existence of effective photon spheres (i) at the throat, (ii) outside the throat and (iii) both at and outside the throat. Consequently, these provide the information about the formation of infinite number of concentric rings and may lead to the detection of wormhole geometries.



中文翻译:

可穿越虫洞中的引力透镜效应

本文旨在研究带电虫洞环境下强引力透镜的作用。为了研究这种影响,获得了确定在喉咙处和喉咙外存在光子球的条件。推导了带电虫洞的喉咙处或喉咙外部存在光子球的必要和充分条件。此外,在三种情况下研究了三种不同形式的红移函数的光子球。这三种情况包括(i)喉咙处,(ii)喉咙外以及(iii)喉咙处和喉咙外都存在有效的光子球。因此,它们提供了有关无限数量的同心环形成的信息,并可能导致虫洞几何形状的检测。

更新日期:2021-04-21
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