Fig. 5.
Similar to Fig. 3, but this time with a color representation of Bϕ(r, θ) showing only the region close to the center. Note the occurrence of V-shaped field lines during certain times at 822 ≤ t ≤ 834, and 846. The field shows radial outward migration during certain times: negative Bϕ at low latitudes for 814 ≤ t ≤ 826, and positive Bϕ at midlatitudes for 834 ≤ t ≤ 854.
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