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

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 نشر من قبل Emma Robinson
 تاريخ النشر 2011
  مجال البحث فيزياء
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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 $Omega_{rm GW}(f) = Omega_3 (f/900 mathrm{Hz})^3$, of $Omega_3 < 0.33$, assuming a value of the Hubble parameter of $h_{100}=0.72$. These new limits are a factor of seven better than the previous best in this frequency band.



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