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  The Einstein@Home search for periodic gravitational waves in LIGO S4 data

Schutz, B. F., LIGO Scientific Collaboration, & et al (2009). The Einstein@Home search for periodic gravitational waves in LIGO S4 data. Physical Review D, 79(2): 022001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-1541-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-1541-0
Genre: Journal Article

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Schutz, Bernard F.1, Author
LIGO Scientific Collaboration, Author              
et al2, Author
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1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, escidoc:24013              
2External Organizations, escidoc:persistent22              

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 Abstract: A search for periodic gravitational waves, from sources such as isolated rapidly-spinning neutron stars, was carried out using 510 hours of data from the fourth LIGO science run (S4). The search was for quasi-monochromatic waves in the frequency range from 50 Hz to 1500 Hz, with a linear frequency drift f-dot (measured at the solar system barycenter) in the range -f/tau < f-dot < 0.1 f/tau, where the minimum spin-down age tau was 1000 years for signals below 300 Hz and 10000 years above 300 Hz. The main computational work of the search was distributed over approximately 100000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 hours, despite the large parameter space searched. No statistically significant signals were found. The sensitivity of the search is estimated, along with the fraction of parameter space that was vetoed because of contamination by instrumental artifacts. In the 100 Hz to 200 Hz band, more than 90% of sources with dimensionless gravitational wave strain amplitude greater than 1e-23 would have been detected.

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 Dates: 2009-01-20
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 79 (2) Sequence Number: 022001 Start / End Page: - Identifier: ISSN: 0556-2821
DOI: 10.1103/PhysRevD.79.022001
eDoc: 377762