On the fate of self-gravitating galactic accretion disks

Details On the fate of self-gravitating galactic accretion disks On the fate of self-gravitating galactic accretion disks

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...294..690k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 294, no. 3, p. 690-692

Astronomy and Astrophysics

Astrophysics

3

Accretion Disks, Galactic Nuclei, Gravitational Fields, Hydrodynamics, Interstellar Matter, Milky Way Galaxy, Molecular Clouds, Angular Momentum, Astronomical Models, Gravitation, Magnetohydrodynamic Turbulence, Star Formation

Scientific paper

We report the results of our studies of gravitational instabilities of accretion disks in the innermost few 100 parsec of galactic nuclei. We take our own Galactic Center as an example and find that it is far away from being gravitationally unstable. We then examine the stability of disks in other galaxies. Our models show that we need quite extreme parameter values in order to get instabilities. Even in these cases, the disks become stable after a few 100 million years due to the accretion process.

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