Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data

Aasi, J. and Lockerbie, N. A. and Tokmakov, K. V., LIGO Scientific Collaboration, Virgo Collaboration (2013) Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data. Physical Review D, 87 (4). 042001. ISSN 1550-2368 (https://doi.org/10.1103/PhysRevD.87.042001)

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Abstract

This paper presents results of an all-sky search for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative range of similar to[-20, 1.1] x 10(-10) Hz s(-1) for the fifth LIGO science run (S5). The search uses a noncoherent Hough-transform method to combine the information from coherent searches on time scales of about one day. Because these searches are very computationally intensive, they have been carried out with the Einstein@Home volunteer distributed computing project. Postprocessing identifies eight candidate signals; deeper follow-up studies rule them out. Hence, since no gravitational wave signals have been found, we report upper limits on the intrinsic gravitational wave strain amplitude h(0). For example, in the 0.5 Hz-wide band at 152.5 Hz, we can exclude the presence of signals with h(0) greater than 7.6 x 10(-25) at a 90% confidence level. This search is about a factor 3 more sensitive than the previous Einstein@Home search of early S5 LIGO data.

  • Item type:Article
    ID code:50722
    Dates:
    Date
    Event
    13 February 2013
    Published
    Notes:J. Aasi et al. (The LIGO Scientific Collaboration and the Virgo Collaboration) Phys. Rev. D 87, 042001. ©2013 American Physical Society.
    Subjects:Science > Astronomy
    Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:09 Dec 2014 16:28
    Last modified:08 Apr 2024 21:52
    URI:https://strathprints.strath.ac.uk/id/eprint/50722
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