Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..may..g501w&link_type=abstract
American Physical Society, APS/AAPT Joint Meeting, May 2-5, 1996, abstract #G5.01
Astronomy and Astrophysics
Astrophysics
Scientific paper
The completion of a network of advanced laser-interferometric gravitational-wave observatories (US LIGO and European VIRGO projects) around 2001 will make possible the study of the inspiral and coalescence of binary systems of compact objects (neutron stars and black holes), using gravitational radiation. To extract useful information from the waves, such as the masses and spins of the bodies, theoretical general relativistic gravitational waveforms will be used as templates, cross-correlated against the detector output, in a matched filtering process. Because the broad-band detectors will be very sensitive to the non-linearly evolving phase of the waves, the templates must be extremely accurate in their treatment of the gravitational back-reaction on the orbital frequency, probably as accurate as O[(v/c)^6] beyond the predictions of the quadrupole formula. This presents a major challenge to theorists. Recently, templates accurate to O[(v/c)^4] were obtained by two independent methods (L. Blanchet, T. Damour, B. R. Iyer, C. M. Will and A. G. Wiseman, Phys. Rev. Lett. 74), 3515 (1995), and extensions to O[(v/c)^5] and higher are in progress. We summarize one of these methods, which extends and improves an earlier framework due to Epstein and Wagoner (R. Epstein and R. V. Wagoner, Astrophys. J. 210), 764 (1975), in which Einstein's equations are recast as a flat spacetime wave equation with source comprised of matter confined to compact regions and gravitational non-linearities extending to infinity. The new method (C. M. Will and A. G. Wiseman, Phys. Rev. D, submitted), carried through O[(v/c)^4], is free of divergences or undefined integrals, correctly predicts all gravitational wave ``tail'' effects caused by backscatter of the outgoing radiation off the background curved spacetime, and yields radiation that propagates asymptotically along true null cones of the curved spacetime.
No associations
LandOfFree
Gravitational waves and the death-dance of compact stellar binaries does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravitational waves and the death-dance of compact stellar binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational waves and the death-dance of compact stellar binaries will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1357300