Multiresolution techniques for the detection of gravitational-wave bursts

Details Multiresolution techniques for the detection of gravitational-wave bursts Multiresolution techniques for the detection of gravitational-wave bursts

2004-12-24

arxiv.org/abs/gr-qc/0412119v1

Class.Quant.Grav. 21 (2004) S1809-S1818

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Proceedings of the 8th Gravitational Wave Data Analysis Workshop, Milwaukee, Wisconsin, 12 pages, 3 figures

Scientific paper

10.1088/0264-9381/21/20/024

We present two search algorithms that implement logarithmic tiling of the time-frequency plane in order to efficiently detect astrophysically unmodeled bursts of gravitational radiation. The first is a straightforward application of the dyadic wavelet transform. The second is a modification of the windowed Fourier transform which tiles the time-frequency plane for a specific Q. In addition, we also demonstrate adaptive whitening by linear prediction, which greatly simplifies our statistical analysis. This is a methodology paper that aims to describe the techniques for identifying significant events as well as the necessary pre-processing that is required in order to improve their performance. For this reason we use simulated LIGO noise in order to illustrate the methods and to present their preliminary performance.

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