Document Type
Article
Publication Date
3-2009
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 −5×10−9–0 Hz s−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 10−24 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 10−6, the search is sensitive to distances as great as 500 pc.
Recommended Citation
Abbott, B. P., et al. “All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data.” Physical Review Letters, vol. 102, no. 11, American Physical Society, Mar. 2009, p. 111102, https://doi.org/10.1103/PhysRevLett.102.111102
Publication Title
Physical Review Letters
DOI
10.1103/PhysRevLett.102.111102
Comments
©2009 American Physical Society. Original published version available at https://doi.org/10.1103/PhysRevLett.102.111102