Dissipative effects in the gaseous subsystems of flat galaxies

Details Dissipative effects in the gaseous subsystems of flat galaxies Dissipative effects in the gaseous subsystems of flat galaxies

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982azh....59..864m&link_type=abstract

(Astronomicheskii Zhurnal, vol. 59, Sept.-Oct. 1982, p. 864-869) Soviet Astronomy (ISSN 0038-5301), vol. 26, Sept.-Oct. 1982, p.

Astronomy and Astrophysics

Astronomy

2

Cosmic Gases, Disk Galaxies, Galactic Structure, Gas Dynamics, Perturbation Theory, Dissipation, Gravitational Effects, Jeans Theory

Scientific paper

When allowance is made for the influence of dissipative effects upon the perturbation dynamics in gravitationally stable gaseous subsystems of flat galaxies, it is found that the Jeans branch of perturbations will decay. Radial entropic perturbations (with an eigenfrequency omega = 0 in the dissipation-free limit) and nonaxisymmetric gradient perturbations in such models will be dissipatively unstable in a wavelength region comparable with the Jeans wavelength.

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