Accretion disks in active galactic nuclei - Vertically explicit models

Details Accretion disks in active galactic nuclei - Vertically explicit models Accretion disks in active galactic nuclei - Vertically explicit models

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...385...94c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 385, Jan. 20, 1992, p. 94-107. Research supported by NASA and Kenyon Colleg

Astronomy and Astrophysics

Astronomy

45

Accretion Disks, Active Galactic Nuclei, Astronomical Models, Black Holes (Astronomy), Angular Momentum, Dwarf Novae, Quasars, Steady State

Scientific paper

A region of the parameter space accessible to accretion disks in AGN is explored using vertically integrated models to describe the thin-disk structure. Particular attention is paid to the role of convection. From a comparison of strongly convective solutions with varying mixing lengths to solutions obtained using a recent theory of convection developed for accretion disks, it is argued that it may be appropriate to take the mixing length to be roughly one-third of a pressure scale height when applying standard mixing-length theory to disks. Scalings are presented for various critical points in the locus of steady-state solutions, and rough estimates of time scales for behavior associated with disk instability are provided.

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