Note on accuracy of the post-Newtonian approximation for extreme-mass ratio inspirals: Retrograde orbits

Ryuichi Fujita, Norichika Sago, Hiroyuki Nakano

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The post-Newtonian approximation is useful to discuss gravitational waveforms for binary inspirals. In this note, for retrograde circular orbits in the equatorial plane, we discuss the region of validity of the post-Newtonian approximation by using the gravitational energy flux derived numerically and analytically in the black hole perturbation approach. It is found that the edge of the allowable region behaves quite intricately, including prograde orbits even if we treat higher post-Newtonian orders.

Original languageEnglish
Article number027001
JournalClassical and Quantum Gravity
Volume35
Issue number2
DOIs
Publication statusPublished - Jan 25 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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