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All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data

Author(s)
Wipf, Christopher C.; Weiss, Rainer; Stein, Leo Chaim; Smith, Nicolas de Mateo; Shapiro, B.; Sarin, P.; Markowitz, Jared John; Katsavounidis, Erotokritos; Harry, Gregory; Grimaldi, F.; Goda, K.; Foley, Stephany; Duke, I.; Cao, Junwei; Brunet, G.; Blackburn, Lindy L.; Barsotti, Lisa; Mavalvala, Nergis; Shoemaker, David H; Mittleman, Richard K; Fritschel, Peter K; Evans, Matthew J; Donovan, Frederick J; Bodiya, Timothy P.; Zucker, Michael E; Ruet, Laurent; Mason, Kenneth R; MacInnis, Myron E; Corbitt, Thomas R; ... Show more Show less
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Abstract
We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 50–1100 Hz and with the frequency’s time derivative in the range -5×10[superscript -9]–0  Hz s[superscript -1]. Data from the first eight months of the fifth LIGO science run (S5) have been used in this search, which is based on a semicoherent method (PowerFlux) of summing strain power. Observing no evidence of periodic gravitational radiation, we report 95% confidence-level upper limits on radiation emitted by any unknown isolated rotating neutron stars within the search range. Strain limits below 10[superscript -24] are obtained over a 200-Hz band, and the sensitivity improvement over previous searches increases the spatial volume sampled by an average factor of about 100 over the entire search band. For a neutron star with nominal equatorial ellipticity of 10[superscript -6], the search is sensitive to distances as great as 500 pc.
Date issued
2009-03
URI
http://hdl.handle.net/1721.1/51849
Department
Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space Research
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
LIGO Scientific Collaboration et al. “All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data.” Physical Review Letters 102.11 (2009): 111102. © 2009 The American Physical Society
Version: Final published version
ISSN
0031-9007

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