Regularization of geodesics in static spherically symmetric Kerr-Schild spacetimes Galindo, Pablo Mars, Marc Causal geodesics Kerr-Schild Spanish Relativity Meeting: "Almost 100 years after Einstein's revolution". University of Valencia, 1st-5th of September 2014 We describe a method to analyze causal geodesics in static and spherically symmetric spacetimes of Kerr-Schild form which, in particular, allows for a detailed study of the geodesics in the vicinity of the central singularity by means of a regularization procedure based on a generalization of the McGehee regularization for the motion of Newtonian point particles moving in a power-law potential. The McGehee regularization was used by Belbruno and Pretorius [1] to perform a dynamical system regularization of the central singularity of the motion of massless test particles in the Schwarzschild spacetime. Our generalization allows us to consider causal (timelike or null) geodesics in any static and spherically symmetric spacetime of Kerr-Schild form. As an example, we apply these results to causal geodesics in the Schwarzschild and Reissner-Nordstrom spacetimes. 2015-09-09T11:22:31Z 2015-09-09T11:22:31Z 2015 info:eu-repo/semantics/article Galindo, P.; Mars, M. Regularization of geodesics in static spherically symmetric Kerr-Schild spacetimes. Journal of Physics: conference series, 600: 012063 (2015). [http://hdl.handle.net/10481/37316] 1742-6588 http://hdl.handle.net/10481/37316 10.1088/1742-6596/600/1/012063 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License IOP Publishing