Second-order gravitational self-force -- a quick summary

Abstract

In order to extract physical parameters from the waveform of an extreme-mass-ratio binary, one requires a second-order--accurate description of the motion of the smaller of the two objects in the binary. Using a method of matched asymptotic expansions, I derive the second-order equation of motion of a small, nearly spherical and non-rotating compact object in an arbitrary vacuum spacetime. I find that the motion is geodesic in a certain locally defined effective metric satisfying the vacuum Einstein equation through second order, and I outline a method of numerically calculating this effective metric.

3 pages, contribution to the proceedings of the 13th Marcel Grossman Meeting, summarizes and discusses material in 1201.5089 and 1206.6538