Gravitational radiation from the r-mode instability
نویسنده
چکیده
The instability in the r-modes of rotating neutron stars can (in principle) emit substantial amounts of gravitational radiation (GR) which might be detectable by LIGO and similar detectors. Estimates are given here of the detectability of this GR based the non-linear simulations of the r-mode instability by Lindblom, Tohline and Vallisneri. The burst of GR produced by the instability in the rapidly rotating 1.4M⊙ neutron star in this simulation is fairly monochromatic with frequency near 960Hz and duration about 100 s. A simple analytical expression is derived here for the optimal S/N for detecting the GR from this type of source. For an object located at a distance of 20Mpc we estimate the optimal S/N to be in the range 1.2 ∼ 12.0 depending on the LIGO II configuration. Gravitational radiation from the r-mode instability 2
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