Fig. 3: Shear and magnetic field dependence of the instability.

Bubble plot of the instability strength from experiments (black bubbles) and 3D simulations (orange bubbles) in the Ω1-Bz plane with Rm shown on the right. The data are obtained in the midplane and at the inner cylinder surface. The red curve represents the boundary for SSL instability. The straight lines show the contours of a constant B0. The black bubble under the white star corresponds to the case shown in Fig. 1.