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2003 ; 6
(1
): 6
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Analytic Black Hole Perturbation Approach to Gravitational Radiation
#MMPMID28936117
Sasaki M
; Tagoshi H
Living Rev Relativ
2003[]; 6
(1
): 6
PMID28936117
show ga
We review the analytic methods used to perform the post-Newtonian expansion of
gravitational waves induced by a particle orbiting a massive, compact body, based
on black hole perturbation theory. There exist two different methods of
performing the post-Newtonian expansion. Both are based on the Teukolsky
equation. In one method, the Teukolsky equation is transformed into a
Regge-Wheeler type equation that reduces to the standard Klein Gordon equation in
the flat-space limit, while in the other method (which was introduced by Mano,
Suzuki, and Takasugi relatively recently, the Teukolsky equation is used directly
in its original form. The former's advantage is that it is intuitively easy to
understand how various curved space effects come into play. However, it becomes
increasingly complicated when one goes to higher and higher post-Newtonian
orders. In contrast, the latter's advantage is that a systematic calculation to
higher post-Newtonian orders can be implemented relatively easily, but otherwise,
it is so mathematical that it is hard to understand the interplay of higher order
terms. In this paper, we review both methods so that their pros and cons may be
seen clearly. We also review some results of calculations of gravitational
radiation emitted by a particle orbiting a black hole.