The physical mechanisms responsible for pulsar timing glitches are thought to excite quasinormal mode oscillations in their parent neutron star that couple to gravitational-wave emission. In August 2006, a timing glitch was observed in the radio emission of PSR B0833-45, the Vela pulsar. At the time of the glitch, the two colocated Hanford gravitational-wave detectors of the Laser Interferometer Gravitational-wave observatory (LIGO) were operational and taking data as part of the fifth LIGO science run (S5). We present the first direct search for the gravitational-wave emission associated with oscillations of the fundamental quadrupole mode excited by a pulsar timing glitch. No gravitational-wave detection candidate was found. We place Bayesian 90% confidence upper limits of 6.3 x 10-21 to 1.4 x 10-20 on the peak intrinsic strain amplitude of gravitational-wave ring-down signals, depending on which spherical harmonic mode is excited. The corresponding range of energy upper limits is 5.0 x 1044 to 1.3 x 1045 erg.
J. Abadie et al., "Search for Gravitational Waves Associated with the August 2006 Timing Glitch of the Vela Pulsar," Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 83, no. 4, American Physical Society (APS), Feb 2011.
The definitive version is available at https://doi.org/10.1103/PhysRevD.83.042001
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© 2011 American Physical Society (APS), All rights reserved.
01 Feb 2011