Identification of long-duration noise transients in LIGO and Virgo

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The LIGO and Virgo detectors are sensitive to a variety of noise sources, such as instrumental artifacts and environmental disturbances. The Stochastic Transient Analysis Multi-detector Pipeline has been developed to search for long-duration (t 1 s) gravitational-wave (GW) signals. This pipeline can also be used to identify environmental noise transients. Here, we present an algorithm to determine when long-duration noise sources couple into the interferometers, as well as identify what these noise sources are. We analyze the cross-power between a GW strain channel and an environmental sensor, using pattern recognition tools to identify statistically significant structure in cross-power timefrequency maps. We identify interferometer noise from airplanes, helicopters, thunderstorms and other sources. Examples from LIGOs sixth science run, S6, and Virgos third scientific run, VSR3, are presented.

Original languageEnglish (US)
Article number235008
JournalClassical and Quantum Gravity
Issue number23
StatePublished - Dec 7 2011
Externally publishedYes

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