Physics
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...92..173b&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 92, May 1984, p. 173-188. Research supported by the Science and Engineering Research Counci
Physics
27
Buoyancy, Magnetic Flux, Nonequilibrium Conditions, Solar Atmosphere, Solar Corona, Solar Magnetic Field, Atmospheric Stratification, Coronal Loops, Hydrostatics, Solar Physics
Scientific paper
The magnetic field in the convection zone and photosphere of the sun exists mostly as concentrated tubes of magnetic flux. It is, therefore, necessary to study the basic properties of magnetic flux tubes to obtain a basis for understanding the behavior of the sun's magnetic field. The present investigation is concerned with the global equilibrium shape of a flux tube in the stratified solar atmosphere. A fundamental property of isolated flux tubes is magnetic buoyancy. Attention is given to flux tubes with external field, and twisted flux tubes. It is shown that the analysis of Parker (1975, 1979) and Spruit (1981) for calculating the equilibrium of a slender flux tube in a stratified atmosphere may be extended to more general situations. The slender tube approximation provides a method of solving the problem of modeling the overall curvature of flux tubes. It is found that for a twisted flux tube, there can be two possible equilibrium values of the height.
Browning Philippa K.
Priest Eric R.
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