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astro-ph1999★ 1.1k cited
Schwarzschild black hole lensing
K. S. Virbhadra, George F. R. Ellis
We study strong gravitational lensing due to a Schwarzschild black hole. Apart from the primary and the secondary images we find a sequence of images on both sides of the optic axi…
astro-ph1998★ 155 cited
Role of the scalar field in gravitational lensing
K. S. Virbhadra, D. Narasimha, S. M. Chitre
A static and circularly symmetric lens characterized by mass and scalar charge parameters is constructed. For the small values of the scalar charge to the mass ratio, the gravitati…