Final published version
Research output: Contribution to Journal/Magazine › Letter › peer-review
All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data. / LIGO Scientific Collaboration.
In: Physical review letters, Vol. 102, No. 11, 111102, 20.03.2009.Research output: Contribution to Journal/Magazine › Letter › peer-review
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TY - JOUR
T1 - All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data
AU - LIGO Scientific Collaboration
AU - Pitkin, M.
PY - 2009/3/20
Y1 - 2009/3/20
N2 - 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.
AB - 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.
KW - 04.80.Nn
KW - 07.05.Kf
KW - 95.55.Ym
KW - 97.60.Gb
KW - Gravitational wave detectors and experiments
KW - Data analysis: algorithms and implementation
KW - data management
KW - Gravitational radiation detectors
KW - mass spectrometers
KW - and other instrumentation and techniques
KW - Pulsars
KW - General Relativity and Quantum Cosmology
KW - Astrophysics
U2 - 10.1103/PhysRevLett.102.111102
DO - 10.1103/PhysRevLett.102.111102
M3 - Letter
VL - 102
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 11
M1 - 111102
ER -