Comparison of filters for detecting gravitational wave bursts in interferometric detectors

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  • 29 October 2002
Abstract
Filters developed in order to detect short bursts of gravitational waves in interferometric detector outputs are compared according to three main points. Conventional Receiver Operating Characteristics (ROC) are first built for all considered filters and for three typical burst signals. Optimized ROC are shown for a simple pulse signal in order to estimate the best detection efficiency of the filters in the ideal case, while realistic ones obtained with filters working with several ``templates'', show how detection efficiencies can be degraded in a practical implementation. Estimations of biases and statistical errors on th resonctruction of the time of arrival of pulse-like signals are then given for each filter. As most of the filters require a prewhitening of the detector noise, the sensitivity to a non perfect noise whitening procedure is finally analysed. The comparison of the different filters finally show that they are rather complementary than actually concurrent.

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