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Abstract: The fourth science run of the LIGO and GEO 600 gravitational-wave detectors,carried out in early 2005, collected data with significantly lower noise thanprevious science runs. We report on a search for short-durationgravitational-wave bursts with arbitrary waveform in the 64-1600 Hz frequencyrange appearing in all three LIGO interferometers. Signal consistency tests,data quality cuts, and auxiliary-channel vetoes are applied to reduce the rateof spurious triggers. No gravitational-wave signals are detected in 15.5 daysof live observation time; we set a frequentist upper limit of 0.15 per day at90% confidence level on the rate of bursts with large enough amplitudes to bedetected reliably. The amplitude sensitivity of the search, characterized usingMonte Carlo simulations, is several times better than that of previoussearches. We also provide rough estimates of the distances at whichrepresentative supernova and binary black hole merger signals could be detectedwith 50% efficiency by this analysis.



Autor: LIGO Scientific Collaboration

Fuente: https://arxiv.org/







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