The reference case: meridional cut of , and for different times. t_max, the time at which B_ϕ/B_p is maximal, is equal to 1.85 t_Ap in this simulation. The colourbar at the bottom of each panel indicates the minimal and maximal values of each variable. The parameters of this simulation are L_u = 10², a density contrast of ρ_c/ρ₀ = 7 × 10³, an initial radial differential rotation given by Eq. (12) and a fixed rotation at the inner radius.