Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run

B.P. Abbott T. Adams 1 R. Bonnand 1 D. Buskulic 1 M. Ducrot 1 V. Germain 1 R. Gouaty 1 N. Letendre 1 F. Marion 1 A. Masserot 1 B. Mours 1 L. Rolland 1 D. Verkindt 1 M. Was 1 M. Yvert 1 François Bondu 2 M. Boër 3 G. Bogaert 3 A. Brillet 3 F. Cleva 3 J.-P. Coulon 3 J.-D. Fournier 3 H. Heitmann 3 F. Kéfélian 3 N. Man 3 L. Martinelli 3 D. Meacher 3 M. Merzougui 3 M. Pichot 3 T. Regimbau 3 M. Turconi 3 J.-Y. Vinet 3 L.-W. Wei 3
1 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
2 IPR - Institut de Physique de Rennes
3 ARTEMIS - Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux
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 LIGO's 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 $\Omega_0<1.7\times 10^{-7}$ 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.
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Submitted on : Thursday, December 8, 2016 - 10:12:31 AM
Last modification on : Wednesday, October 9, 2019 - 12:56:10 PM

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B.P. Abbott, T. Adams, R. Bonnand, D. Buskulic, M. Ducrot, et al.. Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run. Physical Review Letters, American Physical Society, 2017, 118, pp.121101 ⟨10.1103/PhysRevLett.118.121101⟩. ⟨in2p3-01412187⟩

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