Spiral galaxies as gravitational plasmas

Details Spiral galaxies as gravitational plasmas Spiral galaxies as gravitational plasmas

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006adspr..38...47g&link_type=abstract

Advances in Space Research, Volume 38, Issue 1, p. 47-56.

Physics

5

Scientific paper

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.

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