First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds

Abbott, B. and Cantley, C.A. and Lockerbie, N.A. and Tokmakov, K. V., ALLEGRO Collaboration, LIGO Scientific Collaboration (2007) First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds. Physical Review D: Particles and Fields, 76 (2). 022001. ISSN 0556-2821 (https://doi.org/10.1103/PhysRevD.76.022001)

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Abstract

Data from the LIGO Livingston interferometer and the ALLEGRO resonant-bar detector, taken during LIGO's fourth science run, were examined for cross correlations indicative of a stochastic gravitational-wave background in the frequency range 850-950 Hz, with most of the sensitivity arising between 905 and 925 Hz. ALLEGRO was operated in three different orientations during the experiment to modulate the relative sign of gravitational-wave and environmental correlations. No statistically significant correlations were seen in any of the orientations, and the results were used to set a Bayesian 90% confidence level upper limit of Omegagw(f)<=1.02, which corresponds to a gravitational-wave strain at 915 Hz of 1.5×10-23 Hz-1/2. In the traditional units of h1002Omegagw(f), this is a limit of 0.53, 2 orders of magnitude better than the previous direct limit at these frequencies. The method was also validated with successful extraction of simulated signals injected in hardware and software.

ORCID iDs

Abbott, B., Cantley, C.A., Lockerbie, N.A. ORCID logoORCID: https://orcid.org/0000-0002-1678-3260 and Tokmakov, K. V. ORCID logoORCID: https://orcid.org/0000-0002-2808-6593;
  • Item type:Article
    ID code:6483
    Dates:
    Date
    Event
    9 July 2007
    Published
    Notes:B. Abbott et al. (LIGO Scientific Collaboration and ALLEGRO Collaboration) Phys. Rev. D 76, 022001. ©2007 American Physical Society. Errata Phys. Rev. D 76, 029905 (2007); Phys. Rev. D 77, 069904 (2008)
    Subjects:Science > Physics > Optics. Light
    Science > Physics
    Department:Faculty of Science > Physics
    Faculty of Engineering
    Depositing user: Miss Darcy Spiller
    Date deposited:09 Jul 2008
    Last modified:11 Nov 2024 08:52
    URI:https://strathprints.strath.ac.uk/id/eprint/6483
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