Post-post-Newtonian light propagation without integrating the geodesic equations
arXiv:1012.5402
Abstract
A new derivation of the propagation direction of light is given for a 3-parameter family of static, spherically symmetric space-times within the post-post-Newtonian framework. The emitter and the observer are both located at a finite distance. The case of a ray emitted at infinity is also treated.
4 pages; better written, new expression for the impact parameter; presented at the Journées 2010 "Systèmes de Référence Spatio-Temporels", 20-22 September 2010, Observatoire de Paris