LIGO Document P080024-x0

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

Document #:
LIGO-P080024-x0
Document type:
P - Publications
Abstract:
We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 501100 Hz and with the frequency's time derivative in the range -510-90 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.
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Notes and Changes:

Rev P080024-03-Z:
- Full document number: LIGO-P080024-03-Z
- Author(s): Ligo Scientific Collaboration
- Document date: 2008-09-23
- Document received date: 2008-09-23
- Document entry date: 2008-09-23

Rev P080024-02-Z:
- Full document number: LIGO-P080024-02-Z
- Author(s): Ligo Scientific Collaboration
- Document date: 2008-07-10
- Document received date: 2008-07-11
- Document entry date: 2008-07-11

Rev P080024-01-Z:
- Full document number: LIGO-P080024-01-Z
- Author(s): Ligo Scientific Collaboration
- Document date: 2008-06-05
- Document received date: 2008-06-05
- Document entry date: 2008-06-05

Rev P080024-00-Z:
- Full document number: LIGO-P080024-00-Z
- Author(s): Ligo Scientific Collaboration
- Document date: 2008-03-11
- Document received date: 2008-03-11
- Document entry date: 2008-03-11
Journal References:
Published in Phys Rev Letters vol. 102 pg. 111102 (6 pgs).

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