Gravitational waves from inspiralling compact binaries: Energy loss and waveform to second--post-Newtonian order

Details Gravitational waves from inspiralling compact binaries: Energy loss and waveform to second--post-Newtonian order Gravitational waves from inspiralling compact binaries: Energy loss and waveform to second--post-Newtonian order

1995-01-24

arxiv.org/abs/gr-qc/9501029v1

Phys.Rev.D51:5360,1995; Erratum-ibid.D54:1860,1996

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

43 pages, LaTeX-ReVTeX, no figures.

Scientific paper

10.1103/PhysRevD.51.5360 10.1103

Gravitational waves generated by inspiralling compact binaries are investigated to the second--post-Newtonian (2PN) approximation of general relativity. Using a recently developed 2PN-accurate wave generation formalism, we compute the gravitational waveform and associated energy loss rate from a binary system of point-masses moving on a quasi-circular orbit. The crucial new input is our computation of the 2PN-accurate ``source'' quadrupole moment of the binary. Tails in both the waveform and energy loss rate at infinity are explicitly computed. Gravitational radiation reaction effects on the orbital frequency and phase of the binary are deduced from the energy loss. In the limiting case of a very small mass ratio between the two bodies we recover the results obtained by black hole perturbation methods. We find that finite mass ratio effects are very significant as they increase the 2PN contribution to the phase by up to 52\%. The results of this paper should be of use when deciphering the signals observed by the future LIGO/VIRGO network of gravitational-wave detectors.

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