Search for gravitational-wave bursts from soft gamma repeaters
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Date
2008
Authors
Abbott, B.
Abbott, R.
Adhikari, R.
Ajith, P.
Allen, B.
Allen, G.
Amin, R.
Anderson, S.
Anderson, W.
Arain, M.
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Journal article
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Physical Review Letters, 2008; 101(21):211102-1-211102-6
Statement of Responsibility
B. Abbott... D. J. Hosken... J. Munch... P. J. Veitch...et al. (LIGO Scientific Collaboration)
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Abstract
We present a LIGO search for short-duration gravitational waves (GWs) associated with soft gamma ray repeater (SGR) bursts. This is the first search sensitive to neutron star f modes, usually considered the most efficient GW emitting modes. We find no evidence of GWs associated with any SGR burst in a sample consisting of the 27 Dec. 2004 giant flare from SGR 1806-20 and 190 lesser events from SGR 1806-20 and SGR 1900+14. The unprecedented sensitivity of the detectors allows us to set the most stringent limits on transient GW amplitudes published to date. We find upper limit estimates on the model-dependent isotropic GW emission energies (at a nominal distance of 10 kpc) between 3×10⁴⁵ and 9×10⁵² erg depending on waveform type, detector antenna factors and noise characteristics at the time of the burst. These upper limits are within the theoretically predicted range of some SGR models.
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©2008 American Physical Society