First search for gravitational waves from the youngest known neutron star
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Mavalvala_First search.pdf
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Author(s)
Barsotti, Lisa
Blackburn, Lindy L.
Foley, Stephany
Harry, Gregory
Hughey, Barbara
Katsavounidis, Erotokritos
Matichard, Fabrice
Mavalvala, Nergis
Smith, Nicolas de Mateo
Stein, Andrew J.
Date Issued
September 2010
Journal
Astrophysical Journal
Publisher
IOP Publishing
Citation
Abadie, J. et al. “First search for gravitational waves from the youngest known neutron star.” The Astrophysical Journal 722.2 (2010): 1504–1513.
Version
Author's final manuscript
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[superscript –24] on the intrinsic gravitational-wave strain, (0.4-4) × 10[superscript –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.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Department of Physics
LIGO (Observatory : Massachusetts Institute of Technology)
MIT Kavli Institute for Astrophysics and Space Research
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Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1088/0004-637X/722/2/1504
