Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO’s First Observing Run
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PhysRevLett.118.121101.pdf
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Author(s)
Abbott, B. P.
Abbott, R.
Abbott, T. D.
Abernathy, M. R.
Acernese, F.
Ackley, K.
Adams, C.
Adams, T.
Addesso, P.
Adhikari, R. X.
Date Issued
March 2017
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abernathy, M. R.; Acernese, F.; Ackley, K. et al. "Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO’s First Observing Run." Physical Review Letters 118, no. 121101 (March 2017):1-12. © 2017 American Physical Society
Version
Final published version
Abstract
A wide variety of astrophysical and cosmological sources are expected to contribute to a stochastic gravitational-wave background. Following the observations of GW150914 and GW151226, the rate and mass of coalescing binary black holes appear to be greater than many previous expectations. As a result, the stochastic background from unresolved compact binary coalescences is expected to be particularly loud. We perform a search for the isotropic stochastic gravitational-wave background using data from Advanced Laser Interferometer Gravitational Wave Observatory’s (aLIGO) first observing run. The data display no evidence of a stochastic gravitational-wave signal. We constrain the dimensionless energy density of gravitational waves to be Ω_{0}<1.7×10^{-7} with 95% confidence, assuming a flat energy density spectrum in the most sensitive part of the LIGO band (20–86 Hz). This is a factor of ∼33 times more sensitive than previous measurements. We also constrain arbitrary power-law spectra. Finally, we investigate the implications of this search for the background of binary black holes using an astrophysical model for the background.
MIT Department
Massachusetts Institute of Technology. Department of Physics
LIGO (Observatory : Massachusetts Institute of Technology)
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.118.121101
