Variable placement of templates technique in a 2D parameter space for binary inspiral searches

Details Variable placement of templates technique in a 2D parameter space for binary inspiral searches Variable placement of templates technique in a 2D parameter space for binary inspiral searches

Publishing date

2005-04-12

URL

arxiv.org/abs/gr-qc/0504046v2

Journals

Class.Quant.Grav. 22 (2005) 4285-4309

Science

Astronomy and Astrophysics

Field

Astrophysics

SubField

General Relativity and Quantum Cosmology

Additional info

28 pages, 28 figures,submitted to CQG, fixed typos, added sections following referees comments

Type

Scientific paper

Digital Object Identifier

10.1088/0264-9381/22/20/010

Abstract

In the search for binary systems inspiral signal in interferometric gravitational waves detectors, one needs the generation and placement of a grid of templates. We present an original technique for the placement in the associated parameter space, that makes use of the variation of size of the isomatch ellipses in order to reduce the number of templates necessary to cover the parameter space. This technique avoids the potentially expensive computation of the metric at every point, at the cost of having a small number of ``holes'' in the coverage, representing a few percent of the surface of the parameter space, where the match is slightly lower than specified. A study of the covering efficiency, as well as a comparison with a very simple regular tiling using a single ellipse is made. Simulations show an improvement varying between 6% and 30% for the computing cost in this comparison.

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