논문
Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz
- 저자J. Abadie et al. (오정근)
- 학술지Phys. Rev. D 85
- 등재유형
- 게재일자(2012)
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.
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.
