First search for gravitational waves from the youngest known neutron star

Abadie, J. and Lockerbie, N. A. and Tokmakov, K. V., LIGO Scientific Collaboration (2010) First search for gravitational waves from the youngest known neutron star. Astrophysical Journal, 722 (2). pp. 1504-1513. ISSN 1538-4357 (https://doi.org/10.1088/0004-637X/722/2/1504)

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Abstract

We present a search for periodic gravitational waves from the neutron star in the supernova remnant Cassiopeia A. The search coherently analyzes data in a 12 day interval taken from the fifth science run of the Laser Interferometer Gravitational-Wave Observatory. It searches gravitational-wave frequencies from 100 to 300 Hz and covers a wide range of first and second frequency derivatives appropriate for the age of the remnant and for different spin-down mechanisms. No gravitational-wave signal was detected. Within the range of search frequencies, we set 95% confidence upper limits of (0.7-1.2) x 10(-24) on the intrinsic gravitational-wave strain, (0.4-4) x 10(-4) on the equatorial ellipticity of the neutron star, and 0.005-0.14 on the amplitude of r-mode oscillations of the neutron star. These direct upper limits beat indirect limits derived from energy conservation and enter the range of theoretical predictions involving crystalline exotic matter or runaway r-modes. This paper is also the first gravitational-wave search to present upper limits on the r-mode amplitude.

  • Item type:Article
    ID code:30240
    Dates:
    Date
    Event
    20 October 2010
    Published
    Notes:J. Abadie et al 2010 ApJ 722 1504. © 2010. The American Astronomical Society.
    Subjects:Science > Physics
    Science > Astronomy
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:12 Apr 2011 13:40
    Last modified:08 Apr 2024 18:57
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/30240
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