Collective Instabilities of Self-Gravitating Systems. III ---Disk-Halo System---

Details Collective Instabilities of Self-Gravitating Systems. III ---Disk-Halo System--- Collective Instabilities of Self-Gravitating Systems. III ---Disk-Halo System---

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pthph..55.1743t&link_type=abstract

Progress of Theoretical Physics, Vol. 55, No. 6, pp. 1743-1750

Physics

3

Scientific paper

The instability modes of the infinitesimally thin self-gravitating disk, which is composed of rotating and non-rotating parts, are investigated. By solving the dispersion relation numerically under various physical situations, two growing modes are found. They are the modified Jeans mode of rotating component or non-rotating one and the Landau mode by wave particle (non-rotating component) interactions. Possible relevances to spiral arms are discussed briefly.

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