Title

All-sky search for gravitational-wave bursts in the second joint LIGO-Virgo run

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

6-20-2012

Abstract

We present results from a search for gravitational-wave bursts in the data collected by the LIGO and Virgo detectors between July 7, 2009 and October 20, 2010: data are analyzed when at least two of the three LIGO-Virgo detectors are in coincident operation, with a total observation time of 207 days. The analysis searches for transients of duration -1s over the frequency band 64-5000 Hz, without other assumptions on the signal waveform, polarization, direction or occurrence time. All identified events are consistent with the expected accidental background. We set frequentist upper limits on the rate of gravitational-wave bursts by combining this search with the previous LIGO-Virgo search on the data collected between November 2005 and October 2007. The upper limit on the rate of strong gravitational-wave bursts at the Earth is 1.3 events per year at 90% confidence. We also present upper limits on source rate density per year and Mpc3 for sample populations of standard-candle sources. As in the previous joint run, typical sensitivities of the search in terms of the root-sum-squared strain amplitude for these waveforms lie in the range ∼5×10-22Hz-1/2 to ∼1×10-20Hz-1/2. The combination of the two joint runs entails the most sensitive all-sky search for generic gravitational-wave bursts and synthesizes the results achieved by the initial generation of interferometric detectors. © 2012 American Physical Society.

Publication Source (Journal or Book title)

Physical Review D - Particles, Fields, Gravitation and Cosmology

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