Fig. 9.

Bump widths for a Gaussian threshold distribution. Typical sets of solutions of (32)–(33) for a Gaussian threshold distribution with $\kappa =1$, $\sigma =1$ and $ϵ=0.01$. Only those with red dots are stable. Other parameter values are $\sigma =1$, $\alpha =5$, $B=0.76$, $\beta =3$ and $h_0=0.05$