Extreme mass-ratio inspirals in the effective-one-body approach: Quasicircular, equatorial orbits around a spinning black hole

Yunes N.; Buonanno A.; Hughes S.A.Pan Y.Barausse E.Miller M.C.Throwe W.

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Extreme mass-ratio inspirals in the effective-one-body approach: Quasicircular, equatorial orbits around a spinning black hole

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We construct effective-one-body waveform models suitable for data analysis with the Laser Interferometer Space Antenna for extreme mass-ratio inspirals in quasicircular, equatorial orbits about a spinning supermassive black hole. The accuracy of our model is established through comparisons against frequency-domain, Teukolsky-based waveforms in the radiative approximation. The calibration of eight high-order post-Newtonian parameters in the energy flux suffices to obtain a phase and fractional amplitude agreement of better than 1 rad and 1, respectively, over a period between 2 and 6 months depending on the system considered. This agreement translates into matches higher than 97 over a period between 4 and 9 months, depending on the system. Better agreements can be obtained if a larger number of calibration parameters are included. Higher-order mass-ratio terms in the effective-one-body Hamiltonian and radiation reaction introduce phase corrections of at most 30 rad in a 1 yr evolution. These corrections are usually 1 order of magnitude larger than those introduced by the spin of the small object in a 1 yr evolution. These results suggest that the effective-one-body approach for extreme mass-ratio inspirals is a good compromise between accuracy and computational price for Laser Interferometer Space Antenna data-analysis purposes.

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《Physical review, D. Particles, fields, gravitation, and cosmology》 |2011年第2期|044044-1-044044-21|共21页
作者
Yunes N.; Buonanno A.; Hughes S.A.Pan Y.Barausse E.Miller M.C.Throwe W.;
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Department of Physics, Princeton University, Princeton, NJ 08544, United States;

Department of Physics, Joint Space-Science Institute, University of Maryland, College Park, MD 20742, United States;

Department of Physics, MIT Kavli Institute, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, United StatesDepartment of Astronomy, Joint Space-Science Institute, University of Maryland, College Park, MD 20742, United States;

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中图分类粒子物理学;
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Extreme mass-ratio inspirals in the effective-one-body approach: Quasicircular, equatorial orbits around a spinning black hole

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