Gravitational lensing effect in traversable wormholes

Abstract

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.

arXiv comment13 pages, 15 figures

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• Traversable Wormholes in Minimally Geometrical Deformed Trace-Free Gravity using Gravitational Decoupling
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• Deflection of light by wormholes and its shadow due to dark matter within modified symmetric teleparallel gravity formalism
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• Microlensing effect of charged spherically symmetric wormhole
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• Quasinormal spectra of a wormhole family: overtone features and a parameter-controlled redshift
• Galactic microlensing by Lobo-Parsaei-Riazi phantom wormhole: Paczyński light curves and probabilistic features