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Gravitational lensing by wormholes

Tushar Kanti Dey, Surajit Sen

Mod.Phys.Lett.A23:953-962,2008
13 pages, 6 figures

Résumé : We have investigated the gravitational lensing by two wormholes, viz., Janis-Newman-Winnicour (JNW) wormhole and Ellis wormhole. The deflection angle in the strong field limit is calculated and various lens parameters of two wormholes are compared. It is shown that the JNW wormhole exhibits the relativistic images, while the Ellis wormhole does not have any relativistic images due to the absence of its photon sphere.

Soumis à arXiv le 25 Jui. 2008