Thermomagnetic instability in hot spherical plasma shells

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A linear stability analysis of ionized spherical plasma shells with radial temperature gradients and an external poloidal magnetic field is presented. It is shown that both hydromagnetic and thermomagnetic effects can lead to an amplification of waves. Solutions are obtained for a wide range of plasma beta values and the thermomagnetic transport coefficient. The conditions under which the instability grows are found and the characteristic growth rates are calculated. The regime at which the thermomagnetic instability is effective is considered. Applications for the solar corona are discussed.

Original languageEnglish
Pages (from-to)56-60
Number of pages5
JournalAstronomische Nachrichten
Issue number1
StatePublished - 1 Jan 2017


  • MHD – instabilities – Sun: corona

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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