Fig. 10.
Cases R2 (left) and R3 (right): contours of the growth rate σ/Ω0 of the m = 1 mode obtained through the Acheson dispersion relation (colors) and superimposed in black lines are the contours of the fluctuating radial magnetic field coming from the 3D simulation. The agreement for the location of the instability is quite satisfactory in both cases.
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