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Comments on the gravitational self-force problem

Lior M Burko

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I discuss the need for second-order self-force calculation (i.e., self-force of O3)) to obtain gravitational waveforms to O0) for extreme mass ratio binary inspiral. Next, I question this need for many astrophysical systems, for which other sources contribute to the orbital evolution at the same order as self-forces do, specifically spin–orbit and spin–spin interaction. Lastly, I discuss the possibility to obtain both a far-field and a near-field description of many interesting physical systems, with much insight into them, and surprising contexts in which self-forces may become important.


PACS

04.30.Db Wave generation and sources

04.70.-s Physics of black holes

04.25.Nx Post-Newtonian approximation; perturbation theory; related approximations

MSC

83C57 Black holes

83C35 Gravitational waves

Subjects

Gravitation and cosmology

Dates

Issue 15 (7 August 2005)

Received 24 January 2005, in final form 22 March 2005

Published 18 July 2005



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