A model of an isolated magnetic flux tube in a stratified atmosphere
Abstract
A twodimensional model of a magnetic flux tube confined in a gravitational stratified atmosphere is discussed. The magnetic field in the flux tube is assumed to be forcefree. By using the approximation of large scale height, the problem of a free boundary with nonlinear conditions may be reduced to one involving a fixed boundary. The twodimensional features are obtained by applying the perturbation method and adopting the LüstSchlüter model as the basic state. The results show that the configuration of a flux tube confined in a gravitational stratified atmosphere is divergent, and the more twisted the magnetic field, the more divergent is the flux tube.
 Publication:

Journal of Plasma Physics
 Pub Date:
 June 1987
 DOI:
 10.1017/S0022377800012216
 Bibcode:
 1987JPlPh..37..323H
 Keywords:

 Free Boundaries;
 Gravitational Fields;
 Ground State;
 Magnetic Flux;
 Stratified Flow;
 Atmospheric Pressure;
 Computational Fluid Dynamics;
 Flow Distribution;
 Magnetic Fields;
 Solar Atmosphere;
 Stellar Atmospheres;
 Two Dimensional Models;
 Astrophysics