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

B. Abbott, R. Abbott, R. Adhikari, J. Agresti, P. Ajith, B. Allen, R. Amin, SB. Anderson, WG. Anderson, M. Araya, H. Armandula, M. Ashley, S. Aston, C. Aulbert, S. Babak, S. Ballmer, C. Barish, C. Barker, D. Barker, B. BarrPhilip Charlton

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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 . 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.
Original languageEnglish
Pages (from-to)918-930
Number of pages13
JournalAstrophysical Journal, Supplement Series
Volume659
Issue number2
DOIs
Publication statusPublished - Apr 2007

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    Abbott, B., Abbott, R., Adhikari, R., Agresti, J., Ajith, P., Allen, B., Amin, R., Anderson, SB., Anderson, WG., Araya, M., Armandula, H., Ashley, M., Aston, S., Aulbert, C., Babak, S., Ballmer, S., Barish, C., Barker, C., Barker, D., ... Charlton, P. (2007). Searching for a stochastic background of gravitational waves with the laser interferometer gravitational-wave observatory. Astrophysical Journal, Supplement Series, 659(2), 918-930. https://doi.org/10.1086/511329