Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory

B. Abbott, C.A. Cantley, LIGO Scientific Collaboration

Research output: Contribution to journal › Article

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Abstract

The Laser Interferometer Gravitational-Wave Observatory (LIGO) has performed the fourth science run, S4, with significantly improved interferometer sensitivities with respect to previous runs. Using data acquired during this science run, we place a limit on the amplitude of a stochastic background of gravitational waves. For a frequency independent spectrum, the new Bayesian 90% upper limit is ΩGW × [H0/(72 km s−1 Mpc−1)]2 < 6.5 × 10-5. This is currently the most sensitive result in the frequency range 51-150 Hz, with a factor of 13 improvement over the previous LIGO result. We discuss the complementarity of the new result with other constraints on a stochastic background of gravitational waves, and we investigate implications of the new result for different models of this background.
LanguageEnglish
Pages918-930
Number of pages13
JournalAstrophysical Journal
Volume659
Issue number2 I
DOIs
Publication statusPublished - 20 Apr 2007

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LIGO (observatory)
interferometer
gravitational waves
observatory
laser
interferometers
frequency ranges
sensitivity
complementarity
science

Keywords

  • LIGO
  • gravitational waves
  • interferometers

Cite this

Abbott, B. ; Cantley, C.A. ; LIGO Scientific Collaboration. / Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory. In: Astrophysical Journal. 2007 ; Vol. 659, No. 2 I. pp. 918-930.
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Abbott, B, Cantley, CA & LIGO Scientific Collaboration 2007, 'Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory' Astrophysical Journal, vol. 659, no. 2 I, pp. 918-930. https://doi.org/10.1086/511329

Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory. / Abbott, B.; Cantley, C.A.; LIGO Scientific Collaboration.

In: Astrophysical Journal, Vol. 659, No. 2 I, 20.04.2007, p. 918-930.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory

AU - Abbott, B.

AU - Cantley, C.A.

AU - LIGO Scientific Collaboration

PY - 2007/4/20

Y1 - 2007/4/20

N2 - The Laser Interferometer Gravitational-Wave Observatory (LIGO) has performed the fourth science run, S4, with significantly improved interferometer sensitivities with respect to previous runs. Using data acquired during this science run, we place a limit on the amplitude of a stochastic background of gravitational waves. For a frequency independent spectrum, the new Bayesian 90% upper limit is ΩGW × [H0/(72 km s−1 Mpc−1)]2 < 6.5 × 10-5. This is currently the most sensitive result in the frequency range 51-150 Hz, with a factor of 13 improvement over the previous LIGO result. We discuss the complementarity of the new result with other constraints on a stochastic background of gravitational waves, and we investigate implications of the new result for different models of this background.

AB - The Laser Interferometer Gravitational-Wave Observatory (LIGO) has performed the fourth science run, S4, with significantly improved interferometer sensitivities with respect to previous runs. Using data acquired during this science run, we place a limit on the amplitude of a stochastic background of gravitational waves. For a frequency independent spectrum, the new Bayesian 90% upper limit is ΩGW × [H0/(72 km s−1 Mpc−1)]2 < 6.5 × 10-5. This is currently the most sensitive result in the frequency range 51-150 Hz, with a factor of 13 improvement over the previous LIGO result. We discuss the complementarity of the new result with other constraints on a stochastic background of gravitational waves, and we investigate implications of the new result for different models of this background.

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KW - interferometers

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Abbott B, Cantley CA, LIGO Scientific Collaboration. Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory. Astrophysical Journal. 2007 Apr 20;659(2 I):918-930. https://doi.org/10.1086/511329

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