• Medientyp: E-Artikel; Sonstige Veröffentlichung
  • Titel: Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run
  • Beteiligte: Abbott, B.P. [VerfasserIn]; Abbott, R. [VerfasserIn]; Abbott, T.D. [VerfasserIn]; Abernathy, M.R. [VerfasserIn]; Acernese, F. [VerfasserIn]; Ackley, K. [VerfasserIn]; Adams, C. [VerfasserIn]; Adams, T. [VerfasserIn]; Addesso, P. [VerfasserIn]; Adhikari, R.X. [VerfasserIn]; Adya, V.B. [VerfasserIn]; Affeldt, C. [VerfasserIn]; Agathos, M. [VerfasserIn]; Agatsuma, K. [VerfasserIn]; Aggarwal, N. [VerfasserIn]; Aguiar, O.D. [VerfasserIn]; Aiello, L. [VerfasserIn]; Ain, A. [VerfasserIn]; Ajith, P. [VerfasserIn]; Allen, B. [VerfasserIn]; Allocca, A. [VerfasserIn]; Altin, P.A. [VerfasserIn]; Ananyeva, A. [VerfasserIn]; Anderson, S.B. [VerfasserIn]; [...]
  • Erschienen: College Park, MD : American Physical Society, 2017
  • Erschienen in: Physical Review Letters 118 (2017), Nr. 12 ; Physical Review Letters
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/12011; https://doi.org/10.1103/PhysRevLett.118.121101
  • ISSN: 0031-9007
  • Schlagwörter: Upper limits ; Energy density ; Gravitational-wave signals ; Black holes ; Stochastic systems ; Stars ; Interferometers ; Gravitational effects ; Energy density spectrum ; Physical Review ; Laser interferometry ; Gravity waves ; Laser interferometer gravitational-wave observatories ; Astrophysics ; Data display ; Flocculation
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  • Beschreibung: 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.
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