Turbulent transport in accretion disks

Details Turbulent transport in accretion disks Turbulent transport in accretion disks

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..431...79b&link_type=abstract

Accretion processes in astrophysical systems: Some like it hot! - eigth astrophysics conference. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astrophysics

6

Magnetohydrodynamics And Plasmas, Accretion And Accretion Disks, Infall, Accretion, And Accretion Disks

Scientific paper

The physics of turbulent transport in accretion disks is reviewed. The use of a formalism based on noncircular fluctuations is particularly useful, and enables one to understand the different consequences of hydrodynamical, magnetic, and self-gravitating processes. The system of governing equations separates naturally into fluctuation dynamics, which describes how the turbulence is maintained, and mean flow dynamics, which corresponds to classical, ``viscous'' accretion disk theory. Only MHD processes seem capable of providing a physical basis for α disk theory. Nonmagnetic processes remain a viable transport option, but are likely to be wavelike, not turbulent, and have very different dissipational properties from α disks.

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