Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz
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Date
2012
Authors
Hosken, D.
Munch, J.
Ottaway, D.
Veitch, P.
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Journal article
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Physical Review D: Particles, Fields, Gravitation and Cosmology, 2012; 85(12):1-14
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J. Abadie... D. J. Hosken... J. Munch... D. J. Ottaway... P. J. Veitch... et al., LIGO Scientific Collaboration... Virgo Collaboration
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Abstract
A stochastic background of gravitational waves is expected to arise from a superposition of many incoherent sources of gravitational waves, of either cosmological or astrophysical origin. This background is a target for the current generation of ground-based detectors. In this article we present the first joint search for a stochastic background using data from the LIGO and Virgo interferometers. In a frequency band of 600–1000 Hz, we obtained a 95% upper limit on the amplitude of ΩGW(f)=Ω₃(f/900 Hz)3, of Ω₃<0.32, assuming a value of the Hubble parameter of h100=0.71. These new limits are a factor of seven better than the previous best in this frequency band.
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© 2012 American Physical Society