Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985afz....22..303s&link_type=abstract
(Astrofizika, vol. 22, Mar.-Apr. 1985, p. 303-313) Astrophysics (ISSN 0571-7132), vol. 21, no. 2, Sept. 1985, p. 181-188. Transl
Astronomy and Astrophysics
Astrophysics
Astronomical Models, Galactic Clusters, Gas Dynamics, Hydrostatics, Interstellar Gas, Galactic Structure, Velocity Distribution, X Rays
Scientific paper
A study is made of the hydrostatic distribution of gas in a system in a steady state in the regular field but an unsteady one in the irregular field. Such a system has a velocity distribution with mean square of the radial velocity greater than the mean square of the transversal. Clusters of galaxies probably have such a structure. It is found that the connection between the densities of the gas and the galaxies established by Cavaliere and Fusco-Femiano also holds for isothermal gas in the considered system. Hydrostatic equilibrium of the gas does not hold for clusters with very large asymmetry of the velocity distribution function of the galaxies. The surface brightness of the X-ray emission of the gas is calculated.
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