Template-space metric for searches for gravitational waves from the inspiral, merger and ringdown of binary black holes
arXiv:1501.04418 · doi:10.1103/PhysRevD.91.124042
Abstract
Searches for gravitational waves (GWs) from binary black holes using interferometric GW detectors require the construction of template banks for performing matched filtering while analyzing the data. Placement of templates over the parameter space of binaries, as well as coincidence tests of GW triggers from multiple detectors make use of the definition of a metric over the space of gravitational waveforms. Although recent searches have employed waveform templates coherently describing the inspiral, merger and ringdown (IMR) of the coalescence, the metric used in the template banks and coincidence tests was derived from post-Newtonian inspiral waveforms. In this paper, we compute the template-space metric of the IMR waveform family IMRPhenomB over the parameter space of masses and the effective spin parameter. We also propose a coordinate system, which is a modified version of post-Newtonian chirp time coordinates, in which the metric is slowly varying over the parameter space. The match function analytically computed using the metric has excellent agreement with the "exact" match function computed numerically. We show that the metric is able to provide a reasonable approximation to the match function of other IMR waveform families, such that the effective-one-body model calibrated to numerical relativity (EOBNRv2). The availability of this metric can contribute to improving the sensitivity of searches for GWs from binary black holes in the advanced detector era.
8 pages, 4 figures Minor Changes, version as appears in Physical Review D 91 (124042 (2015))
References in corpus (17)
- Phenomenological template family for black-hole coalescence waveforms
- Toward faithful templates for non-spinning binary black holes using the effective-one-body approach
- An improved analytical description of inspiralling and coalescing black-hole binaries
- A new effective-one-body description of coalescing nonprecessing spinning black-hole binaries
- Improved effective-one-body description of coalescing nonspinning black-hole binaries and its numerical-relativity completion
- Accurate Effective-One-Body waveforms of inspiralling and coalescing black-hole binaries
- Search for gravitational waves from binary inspirals in S3 and S4 LIGO data
- Faithful Effective-One-Body waveforms of equal-mass coalescing black-hole binaries
- Detecting binary neutron star systems with spin in advanced gravitational-wave detectors
- Search for Gravitational Waves from Binary Black Hole Inspiral, Merger and Ringdown in LIGO-Virgo Data from 2009-2010
- A template bank to search for gravitational waves from inspiralling compact binaries I: physical models
- Gravitational waves from inspiralling compact binaries: hexagonal template placement and its efficiency in detecting physical signals
- Gravitational-wave data analysis using binary black-hole waveforms
- Building a stochastic template bank for detecting massive black hole binaries
- Search of S3 LIGO data for gravitational wave signals from spinning black hole and neutron star binary inspirals
- A geometric algorithm for efficient coincident detection of gravitational waves
- Search for gravitational wave ringdowns from perturbed black holes in LIGO S4 data