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
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 An-Institute |
pos. | country | downloads | ||
---|---|---|---|---|
total | perc. | |||
1 | United States | 12 | 28.57% | |
2 | Germany | 11 | 26.19% | |
3 | China | 4 | 9.52% | |
4 | Canada | 3 | 7.14% | |
5 | New Zealand | 2 | 4.76% | |
6 | Ireland | 2 | 4.76% | |
7 | United Kingdom | 2 | 4.76% | |
8 | Australia | 2 | 4.76% | |
9 | Israel | 1 | 2.38% | |
10 | Europe | 1 | 2.38% | |
other countries | 2 | 4.76% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.