First search for gravitational waves from the youngest known neutron star

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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.

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: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:11 Nov 2024 09:42
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/30240
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