Accuracy of the post-Newtonian approximation for extreme mass ratio inspirals from a black-hole perturbation approach

Norichika Sago, Ryuichi Fujita, Hiroyuki Nakano

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We revisit the accuracy of the post-Newtonian (PN) approximation and its region of validity for quasicircular orbits of a point particle in the Kerr spacetime, by using an analytically known highest post-Newtonian order gravitational energy flux and accurate numerical results in the black hole perturbation approach. It is found that regions of validity become larger for higher PN order results although there are several local maximums in regions of validity for relatively low-PN order results. This might imply that higher PN order calculations are also encouraged for comparable-mass binaries.

Original languageEnglish
Article number104023
JournalPhysical Review D
Volume93
Issue number10
DOIs
Publication statusPublished - May 11 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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