The Physics of Twisted Magnetic Tubes Rising in a Stratified Medium: Two-dimensional Results

Emonet, T.; Moreno-Insertis, F.
Bibliographical reference

Astrophysical Journal v.492, p.804

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1
1998
Number of authors
2
IAC number of authors
1
Citations
164
Refereed citations
140
Description
The physics of a twisted magnetic flux tube rising in a stratified medium is studied using a numerical MHD code. The problem considered is fully compressible (no Boussinesq approximation), includes ohmic resistivity, and is two dimensional, i.e., there is no variation of the variables in the direction of the tube axis. We study a high plasma beta case with small ratio of radius to external pressure scaleheight. The results obtained can therefore be of relevance to understand the transport of magnetic flux across the solar convection zone.