Strong gravitational lensing by Schwarzschild black hole [PDF]
Tushar Kanti DeySchwarzschild black holes can produce strong gravitational lensing. The relativistic images are produced due to bending of light around the black hole. We propose a model equation to study the strong gravitational lensing. The model equation can well describe the bending angle from a range very close to the photon sphere to the first relativistic image.View original: http://arxiv.org/abs/1208.3306
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