Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989rmxaa..17...79m&link_type=abstract
Revista Mexicana de Astronomia y Astrofisica (ISSN 0185-1101), vol. 17, Dec. 1989, p. 79-84.
Astronomy and Astrophysics
Astronomy
Accretion Disks, Active Galactic Nuclei, Pressure Oscillations, Quasars, Turbulence Effects, Astronomical Models, Galactic Structure, Mach Number
Scientific paper
It is noted that turbulent pressure puslations should be taken into account in the equation of state for the pressure in supersonic regimes. In the framework of the alpha standard accretion disk model, it is shown that the structure and emission of the optically thin region of steady accretion disks in AGNs may be drastically altered. It is shown that z-homogeneity is a very strong assumption that may lead to a solution with matter flowing back from the compact object. The solutions obtained are thermally unstable. It is also shown that temperatures in the range 1000-5000 K yield masses quite different from the values usually assumed for quasars, unless a given relation between M and M is used.
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