TY - JOUR
T1 - Note on accuracy of the post-Newtonian approximation for extreme-mass ratio inspirals
T2 - Retrograde orbits
AU - Fujita, Ryuichi
AU - Sago, Norichika
AU - Nakano, Hiroyuki
N1 - Funding Information:
RF’s work was funded through H2020 ERC Consolidator Grant ‘Matter and strong-field gravity: New frontiers in Einstein’s theory’ (MaGRaTh-646597). This work was also supported by JSPS Grant-in-Aid for Scientific Research (C), No JP16K05356 (NS) and No JP16K05347 (HN), and MEXT Grant-in-Aid for Scientific Research on Innovative Areas, ‘New developments in astrophysics through multi-messenger observations of gravitational wave sources’, No JP24103006 (HN). Some numerical computations were carried out at the Yukawa Institute Computer Facility.
Publisher Copyright:
© 2017 IOP Publishing Ltd.
PY - 2018/1/25
Y1 - 2018/1/25
N2 - 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.
AB - 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.
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U2 - 10.1088/1361-6382/aa9ad5
DO - 10.1088/1361-6382/aa9ad5
M3 - Article
AN - SCOPUS:85039696245
VL - 35
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
SN - 0264-9381
IS - 2
M1 - 027001
ER -