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

J. Aasi, N. A. Lockerbie, K. V. Tokmakov, LIGO Scientific Collaboration, Virgo Collaboration

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We report on an all-sky search for periodic gravitational waves in the frequency range 50-1000 Hz with the first derivative of frequency in the range -8.9 Chi 10(-10) Hz s(-1) 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 Chi 10(-24) in the 158.00-158.25 Hz band. In year 2, the most stringent upper limit is 8.9 Chi 10(-25) in the 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 'quicklook' searches in the Advanced LIGO and Virgo detector era.
LanguageEnglish
Article number085014
Number of pages36
JournalClassical and Quantum Gravity
Volume31
Issue number8
DOIs
Publication statusPublished - 3 Apr 2014

Fingerprint

LIGO (observatory)
gravitational waves
sky
confidence
frequency ranges
cycles
detectors
products

Keywords

  • gravitation
  • cosmology
  • LIGO scientific collaboration
  • gravitational waves
  • all sky searching
  • pulsars

Cite this

Aasi, J. ; Lockerbie, N. A. ; Tokmakov, K. V. ; LIGO Scientific Collaboration ; Virgo Collaboration. / Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run. In: Classical and Quantum Gravity. 2014 ; Vol. 31, No. 8.
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Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run. / Aasi, J.; Lockerbie, N. A.; Tokmakov, K. V.; LIGO Scientific Collaboration; Virgo Collaboration.

In: Classical and Quantum Gravity, Vol. 31, No. 8, 085014, 03.04.2014.

Research output: Contribution to journalArticle

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