Effects of Line-Tying and Non-Uniformities on Thermal Instabilities and Slow MHD Modes

  • D. Hermans
  • A. W. Hood
  • L. Clifford
  • A. Milne
Conference paper

Abstract

The thermal stability of a planar plasma is studied both analytically and numerically for two different models. For τ rad « 1, the growth rate for the thermal instabilities with small wavelengths perpendicular to the magnetic field lines is essentially the same as for the most unstable mode, i.e., a mode with large perpendicular wave length. This could indicate that the instability might be triggered by a mode with small scale structure across the magnetic field. When the magnetic field vanishes locally, localized modes exist.

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References

  1. Hermans, D., Priest, E.R.: 1988a, in Proc. of the Joint Varenna- Abastumani Internat. School and Workshop on Plasma Astrophysics, ESA SP-285, Vol. I, Dec. 1988, 99Google Scholar
  2. Hermans, D., Goossens, M., Kerner, W., Lerbinger, K.: 1988b, Phys. Fluids, 31(3), 547.ADSMATHCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • D. Hermans
    • 1
  • A. W. Hood
    • 1
  • L. Clifford
    • 1
  • A. Milne
    • 1
  1. 1.Dept. of Mathematical and Computational SciencesUniversity of St. AndrewsSt. AndrewsScotland

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