Home > Research > Publications & Outputs > All-Sky LIGO Search for Periodic Gravitational ...


Text available via DOI:

View graph of relations

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

Research output: Contribution to Journal/MagazineLetterpeer-review

  • LIGO Scientific Collaboration
Article number111102
<mark>Journal publication date</mark>20/03/2009
<mark>Journal</mark>Physical review letters
Issue number11
Number of pages6
Publication StatusPublished
<mark>Original language</mark>English


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.