Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz

J. Abadie, N. A. Lockerbie, K. V. Tokmakov, 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 Omega(GW)(f) = Omega(3)(f/900 Hz)(3), of Omega(3) <0.32, assuming a value of the Hubble parameter of h(100) = 0.71. These new limits are a factor of seven better than the previous best in this frequency band.
Original languageEnglish
Article number122001
Number of pages14
JournalPhysical Review D
Volume85
Issue number12
DOIs
Publication statusPublished - 4 Jun 2012

Keywords

  • gravitational waves
  • LIGO scientific collaboration
  • Hubble telescope
  • frequency bands

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