Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz
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/900Hz)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.
- Publication:
-
Physical Review D
- Pub Date:
- June 2012
- DOI:
- 10.1103/PhysRevD.85.122001
- arXiv:
- arXiv:1112.5004
- Bibcode:
- 2012PhRvD..85l2001A
- Keywords:
-
- 95.85.Sz;
- 04.30.Db;
- 04.80.Nn;
- 07.05.Kf;
- Gravitational radiation magnetic fields and other observations;
- Wave generation and sources;
- Gravitational wave detectors and experiments;
- Data analysis: algorithms and implementation;
- data management;
- General Relativity and Quantum Cosmology
- E-Print:
- 29 pages, 6 figures. For a repository of data used in the publication, please see https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=22210. Also see the announcement for this paper at http://www.ligo.org/science/Publication-S5VSR1StochIso/