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Fig. 11


Butterfly diagram for a reference solution with Cα = 6.35, U = 30m / s , ηt = 6.6 × 1011cm2 s-2, and an activity cycle of 21 years. The toroidal field is evaluated at the bottom of the convection zone. The ratio Br/Bφ = 0.0048 at the base of the convection zone.

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