Emergence of magnetic flux in the convection zone. The limits of the thin flux tube approximation.
The thin flux tube approximation cannot describe some important phenomena occurring during the journey of the tubes across the convection zone. This review summarizes five of those processes. One of them is related to the dramatic off-axis expansion suffered by the top of some magnetic tubes of moderate field strength in the middle of the
Moreno-Insertis, F.
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1997