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Type: Journal article
Title: First search for gravitational waves from the youngest known neutron star
Author: Hosken, D.
Munch, J.
Ottaway, D.
Veitch, P.
Citation: Astrophysical Journal, 2010; 722(2):1504-1513
Publisher: Univ Chicago Press
Issue Date: 2010
ISSN: 0004-637X
Statement of
J. Abadie... D. J. Hosken... J. Munch... D. J. Ottaway... P. J. al. (LIGO Scientific Collaboration)
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) × 10−24 on the intrinsic gravitational-wave strain, (0.4–4) × 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 rmodes. This paper is also the first gravitational-wave search to present upper limits on the r-mode amplitude.
Keywords: gravitational waves; stars: neutron; supernovae: individual (Cassiopeia A)
Rights: Copyright 2010. The American Astronomical Society. All rights reserved.
RMID: 0020101403
DOI: 10.1088/0004-637X/722/2/1504
Appears in Collections:Physics publications
IPAS publications
Environment Institute publications

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