Light Deviation around a Spherical Rotating Black Hole to Fifth Order. Lindstedt-Poincaré and Padé Approximations
arXiv:2112.08243
Abstract
Light deviation around a rotating black hole is calculated using the Kerr metric for both small and large deviation angles. For small angles the Lindstedt-Poincaré method is employed to get well-behaved solutions, as well as Padé approximants. For large deviation angles numerical integration has been used.
29 pages, 17 figures