Multichannel matched filtering for spherical gravitational wave antennas

Details Multichannel matched filtering for spherical gravitational wave antennas Multichannel matched filtering for spherical gravitational wave antennas

2009-05-04

arxiv.org/abs/0905.0336v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 4 figures, final version to be published on Classical and Quantum Gravity as part of the Proceedings of GWDAW13

Scientific paper

We study the performance of a multidimensional matched filter as a follow-up module of the coherent method recently developed by two of us for the detection of gravitational wave bursts by spherical resonant detectors. We have tested this strategy on the same set of injections used for the coherent method and found that the matched filter sensibly improves the determination of relevant parameters as the arrival time, amplitude, central frequency and arrival direction of the signal. The matched filter also improves the false alarm rate, reducing it roughly by a factor of 3. The hierarchical structure of the whole analysis pipeline allows to obtain these results without a significant increase of the computation time.

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