All-sky search for periodic gravitational waves in LIGO S5 the full data

Abadie, J. and Lockerbie, N. A. and Tokmakov, K. V., LIGO Scientific Collaboration, Virgo Collaboration (2012) All-sky search for periodic gravitational waves in LIGO S5 the full data. Physical Review D, 85 (2). 022001. ISSN 1550-2368 (https://doi.org/10.1103/PhysRevD.85.022001)

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Abstract

We report on an all-sky search for periodic gravitational waves in the frequency band 50-800 Hz and with the frequency time derivative in the range of 0 through -6 x 10(-9) Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. After recent improvements in the search program that yielded a 10x increase in computational efficiency, we have searched in two years of data collected during LIGO's fifth science run and have obtained the most sensitive all-sky upper limits on gravitational-wave strain to date. Near 150 Hz our upper limit on worst-case linearly polarized strain amplitude h(0) is 1 x 10(-24), while at the high end of our frequency range we achieve a worst-case upper limit of 3.8 x 10(-24) for all polarizations and sky locations. These results constitute a factor of 2 improvement upon previously published data. A new detection pipeline utilizing a loosely coherent algorithm was able to follow up weaker outliers, increasing the volume of space where signals can be detected by a factor of 10, but has not revealed any gravitational-wave signals. The pipeline has been tested for robustness with respect to deviations from the model of an isolated neutron star, such as caused by a low-mass or long-period binary companion.

ORCID iDs

Abadie, 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:39862
    Dates:
    Date
    Event
    5 January 2012
    Published
    Notes:J. Abadie et al. (The LIGO Scientific Collaboration, The Virgo Collaboration) Phys. Rev. D 85, 022001. © 2012 American Physical Society
    Subjects:Science > Physics > Solid state physics. Nanoscience
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:30 May 2012 13:39
    Last modified:11 Nov 2024 10:08
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/39862
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