Fig. 29.

Frequency band of the CFS instability based on $m=2$ and $m=3$ f -mode oscillations for two sequences of rigidly rotating polytropic neutron stars with $\mathit{\Gamma }=2$ and $\mathit{\Gamma }=2.5$. Each band is limited on the left by the neutral point and on the right by the frequency of the counter-rotating mode in the most rapidly rotating model. The sensitivity noise curves of aLIGO and the future Einstein Telescope are also plotted. (Image reproduced with permission from Zink et al. 2010, copyright by APS)