Title

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

Authors

J. Abadie, California Institute of Technology
B. P. Abbott, California Institute of Technology
R. Abbott, California Institute of Technology
T. D. Abbott, California State University, Fullerton
M. Abernathy, University of Glasgow
T. Accadia, Université Savoie Mont Blanc
F. Acernese, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
C. Adams, LIGO Livingston
R. Adhikari, California Institute of Technology
C. Affeldt, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
M. Agathos, FOM-Institute of Subatomic Physics - NIKHEF
K. Agatsuma, National Institutes of Natural Sciences - National Astronomical Observatory of Japan
P. Ajith, California Institute of Technology
B. Allen, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
E. Amador Ceron, University of Wisconsin-Milwaukee
D. Amariutei, University of Florida
S. B. Anderson, California Institute of Technology
W. G. Anderson, University of Wisconsin-Milwaukee
K. Arai, California Institute of Technology
M. A. Arain, University of Florida
M. C. Araya, California Institute of Technology
S. M. Aston, University of Birmingham
P. Astone, Istituto Nazionale di Fisica Nucleare - INFN
D. Atkinson, LIGO Hanford
P. Aufmuth, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
C. Aulbert, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
B. E. Aylott, University of Birmingham
S. Babak, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
P. Baker, Montana State University
G. Ballardin, European Gravitational Observatory (EGO)
S. Ballmer, Syracuse University
J. C.B. Barayoga, California Institute of Technology
D. Barker, LIGO Hanford

Document Type

Article

Publication Date

6-4-2012

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. © 2012 American Physical Society.

Publication Source (Journal or Book title)

Physical Review D - Particles, Fields, Gravitation and Cosmology

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