Bounds on the ideal MHD stability of line-tied 2-D coronal magnetic fields

P. de Bruyne, A. W. Hood

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

A tractable method for investigating the linear stability of line-tied two-dimensional coronal magnetic fields is introduced. It is based on the Bernstein et al. (1958) energy principle and can be applied to nonisothermal equilibria with gravity, having a translational invariance. A linear force-free field is shown to be completely stable, regardless of the shear. The role of pressure gradients, footpoint displacements, line-tying, and stratification on an isothermal magnetohydrostatic equilibrium is assessed.
Original languageEnglish
Pages (from-to)241-269
JournalSolar Physics
Volume123
DOIs
Publication statusPublished - 1 Sept 1989

Keywords

  • Magnetic Field Configurations
  • Magnetohydrodynamic Stability
  • Solar Corona
  • Solar Magnetic Field
  • Differential Equations
  • Force-Free Magnetic Fields
  • Magnetohydrodynamics
  • Solar Atmosphere

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