Precise analytic treatment of Kerr and Kerr-(anti) de Sitter black holes as gravitational lenses
Precise analytic treatment of Kerr and Kerr-(anti) de Sitter black holes as gravitational lenses
The null geodesic equations that describe the motion of photons in Kerr spacetime are solved exactly in the presence of the cosmological constant Λ. The exact solution for the deflection angle for generic light orbits (i.e. non-polar, non-equatorial) is calculated in terms of the generalized hypergeometric functions of Appell and …