A New Waveform Consistency Test for Gravitational Wave Inspiral Searches

Abstract

Searches for binary inspiral signals in data collected by interferometric gravitational wave detectors utilize matched filtering techniques. Although matched filtering is optimal in the case of stationary Gaussian noise, data from real detectors often contains "glitches" and episodes of excess noise which cause filter outputs to ring strongly. We review the standard χ^2 statistic which is used to test whether the filter output has appropriate contributions from several different frequency bands. We then propose a new type of waveform consistency test which is based on the time history of the filter output. We apply one such test to the data from the first LIGO science run and show that it cleanly distinguishes between true inspiral waveforms and large-amplitude false signals which managed to pass the standard χ^2 test.

arXiv comment10 pages, 6 figures, submitted to Classical and Quantum Gravity for the proceedings of the Eighth Gravitational Wave Data Analysis Workshop (GWDAW-8)

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• Veto Studies for LIGO Inspiral Triggers
• Signal based vetoes for the detection of gravitational waves from inspiralling compact binaries
• Gravitational-wave searches in the era of Advanced LIGO and Virgo
• Application of the Probability Event Horizon filter to constrain the local rate density of binary black hole inspirals with Advanced LIGO