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Fig. 2
Instability map of the modes with m = 0, m = 1 and m = 2 in quasi-Kepler flows (μΩ = 0.35). For a given Rm the flow is unstable for Lundquist numbers S between the values at the weak-field branch and the strong-field branch. Star symbols mark the series of nonlinear simulations discussed below. Pm = 1.
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