Magnetic Field Configurations Associated with Polarity Intrusion in a Solar Active Region - Part Two
Abstract
The theoretical force-free magnetic fields in the first paper of this series, modeling magnetic configurations associated with polarity intrusion in active regions, are established to be all stable to linear ideal hydromagnetic perturbations under the boundary condition that anchors the lines of force rigidly to the photosphere. It is shown first that these force-free fields belong to an even larger class found by Chang and Carovillano (1981). A proof by the energy principle is then given to establish that all force-free magnetic fields in the larger class are absolutely stable. The physical implications of this result are discussed.
- Publication:
-
Solar Physics
- Pub Date:
- September 1988
- DOI:
- 10.1007/BF00148728
- Bibcode:
- 1988SoPh..115..269L
- Keywords:
-
- Force-Free Magnetic Fields;
- Magnetic Field Configurations;
- Solar Activity;
- Solar Magnetic Field;
- Current Sheets;
- Magnetohydrodynamic Stability;
- Photosphere;
- Solar Atmosphere;
- Solar Wind;
- Solar Physics;
- Boundary Condition;
- Magnetic Field;
- Active Region;
- Large Class;
- Field Configuration