Gravitational wave chirp search: Economization of post-Newtonian matched filter bank via cardinal interpolation

Croce, R., Demma, Th., Pierro, V., Pinto, I., Churches, David and Sathyaprakash, Bangalore Suryanarayana ORCID: https://orcid.org/0000-0003-3845-7586 2000. Gravitational wave chirp search: Economization of post-Newtonian matched filter bank via cardinal interpolation. Physical Review -Series d- Particles Fields Gravitation and Cosmology 62 (12) , 121101. 10.1103/PhysRevD.62.121101

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Abstract

The final inspiral phase in the evolution of a compact binary consisting of black holes and/or neutron stars is among the most probable events that a network of ground-based interferometric gravitational wave detectors is likely to observe. Gravitational radiation emitted during this phase will have to be dug out of noise by matched-filtering (correlating) the detector output with a bank of several 105 templates, making the computational resources required quite demanding, though not formidable. We propose an interpolation method for evaluating the correlation between template waveforms and the detector output, and show that the method is effective in substantially reducing the number of templates required. Indeed, the number of templates needed could be a factor of ∼4 smaller than required by the usual approach, when the minimal overlap between the template bank and an arbitrary signal (the so-called minimal match) is 0.97. The method is amenable to easy implementation, and the various detector projects might benefit by adopting it to reduce the computational costs of inspiraling neutron star and black hole binary searches.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	American Physical Society
ISSN:	1550-7998
Last Modified:	24 Oct 2022 10:48
URI:	https://orca.cardiff.ac.uk/id/eprint/45937

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