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Application of a Hough search for continuous gravitational waves on data from the 5th LIGO science run

Aasi, J., Abadie, J., Abbott, B. P., Abbott, R., Abbott, T., Abernathy, M. R., et al. (2014). Application of a Hough search for continuous gravitational waves on data from the 5th LIGO science run. Classical and quantum gravity, 31(8): 085014. doi:10.1088/0264-9381/31/8/085014.

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Creators:
Aasi, J., Author
Abbott, B. P., Author
Abbott, R., Author
Abbott, T., Author
Abernathy, M. R., Author
Acernese, F., Author
Affeldt, C.1, Author
Agathos, M., Author
Aggarwal, N., Author
Aguiar, O. D., Author
Ajith, P., Author
Allen, B.2, Author
Allocca, A., Author
Amariutei, D., Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011
3Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013
4Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290
5Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society, ou_1445566

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
Abstract: We report on an all-sky search for periodic gravitational waves in the frequency range $\mathrm{50-1000 Hz}$ with the first derivative of frequency in the range $-8.9 \times 10^{-10}$ Hz/s to zero in two years of data collected during LIGO's fifth science run. Our results employ a Hough transform technique, introducing a $\chi^2$ test and analysis of coincidences between the signal levels in years 1 and 2 of observations that offers a significant improvement in the product of strain sensitivity with compute cycles per data sample compared to previously published searches. Since our search yields no surviving candidates, we present results taking the form of frequency dependent, 95$%$ confidence upper limits on the strain amplitude $h_0$. The most stringent upper limit from year 1 is $1.0\times 10^{-24}$ in the $\mathrm{158.00-158.25 Hz}$ band. In year 2, the most stringent upper limit is $\mathrm{8.9\times10^{-25}}$ in the $\mathrm{146.50-146.75 Hz}$ band. This improved detection pipeline, which is computationally efficient by at least two orders of magnitude better than our flagship Einstein$@$Home search, will be important for "quick-look" searches in the Advanced LIGO and Virgo detector era.

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Dates: 2013-11-112014-03-172014
Publication Status: Published in print
Pages: Accepted in Classical and Quantum Gravity. Science summary of results available at http://www.ligo.org/science/Publication-S5CWHough/index.php
Publishing info: -
Rev. Method: -
Identifiers: arXiv: 1311.2409
DOI: 10.1088/0264-9381/31/8/085014
Degree: -

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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 31 (8) Sequence Number: 085014 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: https://pure.mpg.de/cone/journals/resource/954925513480_1