Tuesday, April 23, 2013

1304.6077 (Abdul H. Mroue et al.)

A catalog of 171 high-quality binary black-hole simulations for
gravitational-wave astronomy
   [PDF]

Abdul H. Mroue, Mark A. Scheel, Bela Szilagyi, Harald P. Pfeiffer, Michael Boyle, Daniel A. Hemberger, Lawrence E. Kidder, Geoffrey Lovelace, Sergei Ossokine, Nicholas W. Taylor, Anil Zenginoglu, Luisa T. Buchman, Tony Chu, Evan Foley, Matthew Giesler, Robert Owen, Saul A. Teukolsky
Coalescing binary black holes are a primary science target of ground-based gravitational-wave detectors, which require detailed knowledge of the expected waveforms to maximize detections and our understanding of the waves' sources. This paper presents a catalog of numerical binary black- hole simulations that represents a major advance toward the application of numerical relativity to gravitational-wave data analysis. Specifically, the catalog contains 171 numerical simulations that maintain the high accuracy required for matched filtering while following more orbits (up to 33) than previous simulations. A larger number of orbits allows a more reliable connection to approximate analytical waveforms, which are used to extend numerical waveforms to span the entire frequency range of a detector. The catalog contains 91 precessing binaries, providing the most comprehensive survey of precessing systems to date, and includes waveforms with black-hole spins up to 0.97, mass ratios up to 8, and orbital eccentricities from a few percent to 1e-4. With this combination of length, accuracy, and parameter-space coverage, the catalog can be used to significantly improve existing gravitational-wave templates (including precessing binaries), to study detection efficiency of gravitational-wave searches, and to quantify systematic biases of parameter estimation of detected gravitational waves. Formidable challenges remain; for example, precession complicates the connection of numerical and approximate analytical waveforms, and vast regions of the parameter space remain unexplored.
View original: http://arxiv.org/abs/1304.6077

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