M ay 2 01 6 Kerr Geodesics Following the Axis of Symmetry

J. Gariel, N. O. Santos , and Anzhong Wang 3,4,5§ Sorbonne Universités, UPMC Université Paris 06, LERMA, UMRS8112 du CNRS, Observatoire de Paris-Meudon 5, Place Jules Janssen, F-92195 Meudon Cedex, France School of Mathematical Sciences, Queen Mary, University of London, London E1 4NS, UK GCAP-CASPER, Department of Physics, Baylor University, Waco, Texas 76798-7316, USA 4 Institute for Advanced Physics & Mathematics, Zhejiang University of Technology, Hangzhou 310032, China 5 Departamento de F́ısica Teórica, Instituto de F́ısica, UERJ, 20550-900, Rio de Janeiro, Brazil