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

Aasi, J. and Lockerbie, N. A. and Tokmakov, K. V., LIGO Scientific Collaboration, Virgo Collaboration (2014) Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run. Classical and Quantum Gravity, 31 (8). 085014. ISSN 1361-6382 (https://doi.org/10.1088/0264-9381/31/8/085014)

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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.

ORCID iDs

Aasi, J., Lockerbie, N. A. ORCID logoORCID: https://orcid.org/0000-0002-1678-3260 and Tokmakov, K. V. ORCID logoORCID: https://orcid.org/0000-0002-2808-6593;
  • Item type:Article
    ID code:50703
    Dates:
    Date
    Event
    3 April 2014
    Published
    Notes:J Aasi et al 2014 Class. Quantum Grav. 31 085014. © Copyright 2014 IOP Publishing
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:09 Dec 2014 14:12
    Last modified:11 Nov 2024 10:53
    URI:https://strathprints.strath.ac.uk/id/eprint/50703
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