Abstract
The study of resistive ballooning instabilities in line-tied coronal
magnetic fields is extended by including viscosity in the stability
analysis. The equations that govern the resistive ballooning
instabilities are derived and the effects of parallel and perpendicular
viscosity are included using Braginskii's stress tensor. Numerical
solutions to these equations are obtained under the rigid wall boundary
conditions for arcades with cylindrically-symmetric magnetic fields. It
is found that viscosity has a stabilizing effect on the resistive
ballooning instabilities with perpendicular viscosity being more
important by far than parallel viscosity. The strong stabilizing effect
of perpendicular viscosity can lead to complete stabilization for
realistic values of the equilibrium quantities.
| Original language | English |
|---|---|
| Pages (from-to) | 235-249 |
| Journal | Solar Physics |
| Volume | 115 |
| DOIs | |
| Publication status | Published - 1 Sept 1988 |
Keywords
- Ballooning Modes
- Solar Corona
- Solar Magnetic Field
- Viscosity
- Magnetohydrodynamic Stability
- Photosphere
- Skylab Program
- Solar Maximum Mission
- Stress Tensors