Figure 2. Schematic of the convection used in the simulations and the growth process of the dipole magnetic field (IMAGE)
Caption
In the upper schematic, plasma occupies the light-blue region, and when a continuous driving force is applied at the locations indicated by the white arrows, convection is generated as shown by the black arrows. The middle panels show the growth of the dipole magnetic field for the northward-polarity and southward-polarity cases, respectively. The lower panel indicates the initial stage during which periodic small-amplitude reversals occur (light yellow region), followed by a stable stage in which the polarity becomes fixed (light green region). This panel also shows that even when a weak magnetic perturbation is imposed in the stable state, no significant change is observed.
Credit
National Institute for Fusion Science
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