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

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Abbott, B.P.; Abbott, R.; Abbott, T.D.; Abernathy, M.R.; Acernese, F. et al.: Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run. In: Physical Review Letters 118 (2017), Nr. 12, 121101. DOI: https://doi.org/10.1103/PhysRevLett.118.121101

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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 Ω0<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. © 2017 American Physical Society.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Fakultät für Mathematik und Physik
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pos. country downloads
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1 image of flag of United States United States 12 28.57%
2 image of flag of Germany Germany 11 26.19%
3 image of flag of China China 4 9.52%
4 image of flag of Canada Canada 3 7.14%
5 image of flag of New Zealand New Zealand 2 4.76%
6 image of flag of Ireland Ireland 2 4.76%
7 image of flag of United Kingdom United Kingdom 2 4.76%
8 image of flag of Australia Australia 2 4.76%
9 image of flag of Israel Israel 1 2.38%
10 image of flag of Europe Europe 1 2.38%
    other countries 2 4.76%

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