A quasi-physical family of gravity-wave templates for precessing binaries of spinning compact objects: Application to double-spin precessing binaries

摘要

The gravitational waveforms emitted during the adiabatic inspiral ofprecessing binaries with two spinning compact bodies of comparable masses,evaluated within the post-Newtonian approximation, can be reproduced ratheraccurately by the waveforms obtained by setting one of the two spins to zero,at least for the purpose of detection by ground-based gravitational-waveinterferometers. Here we propose to use this quasi-physical family ofsingle-spin templates to search for the signals emitted by double-spinprecessing binaries, and we find that its signal-matching performance issatisfactory for source masses (m1,m2) in [3,15]Msun x [3,15]Msun. For thismass range, using the LIGO-I design sensitivity, we estimate that the number oftemplates required to yield a minimum match of 0.97 is ~320,000. We discussalso the accuracy to which the single-spin template family can be used toestimate the parameters of the original double-spin precessing binaries.