On the Deflection of Light by a Charged Rotating Black Hole
The Kerr-Newman, Schwarzschild, Reissner-Nordstrom, Kerr and Lense-Thirring metrics have been presented. The deflection of light by Kerr-Newman's black hole has been evaluated. Expressions for the law of motion and trajectory of light have been obtained. The black hole is assumed to be slowly rotating. The light impact parameter is considered to be much superior to the gravitational radius and classical radius of the black hole. The deflection of light is both due to attraction by the black hole mass and due to repulsion by its charge and specific angular momentum.