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

Pitkin, M. (2009) All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data. Physical review letters, 102 (11). ISSN 1079-7114

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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 −5×10−9–0 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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
136210
Deposited By:
Deposited On:
19 Aug 2019 15:05
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Apr 2020 07:33