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Template banks to search for compact binaries with spinning components in gravitational wave data

Van Den Broeck, Chris, Brown, Duncan, Cokelaer, Thomas, Harry, Ian William, Jones, Gareth, Sathyaprakash, Bangalore Suryanarayana, Tagoshi, Hideyuki and Takahashi, Hirotaka 2009. Template banks to search for compact binaries with spinning components in gravitational wave data. Physical Review D - Particles, Fields, Gravitation and Cosmology 80 (2) , 024009. 10.1103/PhysRevD.80.024009

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Gravitational waves from coalescing compact binaries are one of the most promising sources for detectors such as LIGO, Virgo, and GEO600. If the components of the binary possess significant angular momentum (spin), as is likely to be the case if one component is a black hole, spin-induced precession of a binary’s orbital plane causes modulation of the gravitational-wave amplitude and phase. If the templates used in a matched-filter search do not accurately model these effects then the sensitivity, and hence the detection rate, will be reduced. We investigate the ability of several search pipelines to detect gravitational waves from compact binaries with spin. We use the post-Newtonian approximation to model the inspiral phase of the signal and construct two new template banks using the phenomenological waveforms of Buonanno, Chen, and Vallisneri [ A. Buonanno, Y. Chen and M. Vallisneri Phys. Rev. D 67 104025 (2003)]. We compare the performance of these template banks to that of banks constructed using the stationary phase approximation to the nonspinning post-Newtonian inspiral waveform currently used by LIGO and Virgo in the search for compact binary coalescence. We find that, at the same false alarm rate, a search pipeline using phenomenological templates is no more effective than a pipeline which uses nonspinning templates. We recommend the continued use of the nonspinning stationary phase template bank until the false alarm rate associated with templates which include spin effects can be substantially reduced.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Additional Information: 11 pages.
Publisher: American Physical Society
ISSN: 1550-7998
Last Modified: 06 Sep 2020 15:08

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