Spiral galaxies as gravitational plasmas

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21 Scopus citations


This article reviews recent studies of dynamics of disk-shaped galaxies with special emphasis on their spiral structures. In a local version of kinetic stability theory, the very existence and the value of the critical wavelength of the spiral structure arising due to nonresonant Jeans-type instability of gravity perturbations is explained. A formal analogy between the collective oscillations in a rotating self-gravitating disk and the oscillations of a hot nonneutral plasma in a magnetic field is explored.

Original languageEnglish
Pages (from-to)47-56
Number of pages10
JournalAdvances in Space Research
Issue number1
StatePublished - 1 Jan 2006


  • Galaxies: Kinematics and dynamics
  • Galaxies: Spiral galaxies
  • Galaxies: Structure
  • Waves and instabilities

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • General Earth and Planetary Sciences


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