MG13 - Talk detail |
Participant |
Pound, Adam | |||||||
Institution |
University of Southampton - University Road - Southampton - Hampshire - United Kingdom | |||||||
Session |
AN2/3 |
Accepted |
Yes |
Order |
8 |
Time |
17:18 - 17:42 | 20' + 4' |
Talk |
Oral abstract |
Title |
Second-order gravitational self-force | |||||
Co-authors | ||||||||
Abstract |
In order to extract physical parameters from the waveform of an extreme-mass-ratio binary, one requires a highly accurate description of the motion of the smaller of the two bodies. I show how to derive the equation of motion of a small, compact body moving in an arbitrary vacuum spacetime. My method is based on matched asymptotic expansions, in which I calculate a general solution to Einstein's equation in a small region surrounding the body. Taking the small body to be approximately spherical and non-rotating (e.g., a perturbed Schwarzschild black hole), I find the equation of motion through second order in the body's mass. In this case, the motion is found to be geodesic in a certain locally defined regular geometry satisfying Einstein's equation at second order. |
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