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Article
Directional Limits on Persistent Gravitational Waves Using LIGO S5 Science Data
Physical Review Letters
  • J. Abadie
  • Marco Cavaglia, Missouri University of Science and Technology
  • For full list of authors, see publisher's website., For full list of authors, see publisher's website.
Abstract

The gravitational-wave (GW) sky may include nearby pointlike sources as well as stochastic backgrounds. We perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sources. Finding no evidence to support the detection of GWs, we present 90% confidence level (C.L.) upper-limit maps of GW strain power with typical values between 2 - 20 x 10-50 strain2 Hz-1 and 5 - 35 x 10-49 strain2Hz-1sr-1 for pointlike and extended sources, respectively. The latter result is the first of its kind. We also set 90% C.L. limits on the narrow-band root-mean-square GW strain from interesting targets including Sco X-1, SN 1987A and the Galactic center as low as ≈7 x 10-25 in the most sensitive frequency range near 160 Hz.

Department(s)
Physics
Keywords and Phrases
  • Confidence levels,
  • Directional search,
  • Extended sources,
  • Frequency ranges,
  • Galactic Center,
  • Narrow bands,
  • Root mean squares,
  • Science-data,
  • Typical values,
  • Atomic physics,
  • Physics,
  • Gravity waves
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2011 American Physical Society (APS), All rights reserved.
Publication Date
12-1-2011
Publication Date
01 Dec 2011
Disciplines
Citation Information
J. Abadie, Marco Cavaglia and For full list of authors, see publisher's website.. "Directional Limits on Persistent Gravitational Waves Using LIGO S5 Science Data" Physical Review Letters Vol. 107 Iss. 27 (2011) ISSN: 0031-9007
Available at: http://works.bepress.com/marco-cavaglia/45/