Strongly Magnetized Turbulent Accretion Disks with Application to AGN

Details Strongly Magnetized Turbulent Accretion Disks with Application to AGN Strongly Magnetized Turbulent Accretion Disks with Application to AGN

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19913202p&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #132.02; Bulletin of the American Astronomical Society, Vol. 33, p.1498

Astronomy and Astrophysics

Astronomy

Scientific paper

We consider a model of turbulent accretion disks supported by magnetic pressure of turbulent magnetic fields. The turbulent kinetic energy and the turbulent magnetic energy exceed the thermal energy in the disk. Such supersonic turbulence has a dissipation time on the order of one turnover time of the largest eddy, which is limited by the disk thickness. The energy dissipated by the turbulence is radiated away from the surface of the disk. We derive the condition for the radiation loss time scale to be short enough to justify the self-consistency of a magnetically dominated thin disk. We calculate the radial structure and emission specta of such a disk. We also discuss the possible origin of the strong field in the context of AGN.

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