chi sup 2 testing of optimal filters for gravitational wave signals: An experimental implementation
L. Baggio, M. Cerdonio, A. Ortolan, G. Vedovato, L. Taffarello, J-P. Zendri, M. Bonaldi, P. Falferi, V. Martinucci, R. Mezzena, G. A. Prodi, S. Vitale
Abstract
We have implemented likelihood testing of the performance of an optimal filter within the online analysis of AURIGA, a sub-Kelvin resonant-bar gravitational wave detector. We demonstrate the effectiveness of this technique in discriminating between impulsive mechanical excitations of the resonant-bar and other spurious excitations. This technique also ensures the accuracy of the estimated parameters such as the signal-to-noise ratio. The efficiency of the technique to deal with non-stationary noise and its application to data from a network of detectors are also discussed.
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