Spiral galaxies as gravitational plasmas

E. Griv, M. Gedalin, C. Yuan

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

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
Volume38
Issue number1
DOIs
StatePublished - 1 Jan 2006

Keywords

  • 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
  • Earth and Planetary Sciences (all)

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