Magnetic Stresses in the Inner Regions of Accretion Disks around Black Holes

Details Magnetic Stresses in the Inner Regions of Accretion Disks around Black Holes Magnetic Stresses in the Inner Regions of Accretion Disks around Black Holes

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002chee.conf...81k&link_type=abstract

CURRENT HIGH-ENERGY EMISSION AROUND BLACK HOLES . Proceedings of the 2nd KIAS Astrophysics Workshop. Held 3-8 September 2001 in

Astronomy and Astrophysics

Astrophysics

Scientific paper

In earlier work on angular momentum flow through accretion disks, the net angular momentum flux was treated as a freely-choosable boundary condition, and was determined by a heuristic argument that there should be no stress at the marginally stable orbit. Now that MHD turbulence is seen to be the primary agent of torque in disks, the stress at the marginally stable orbit is calculable, and it is found to be non-zero. Consequences include an increase in the energy available for radiation, reduced black hole spin-up, and generation of disk fluctuations.

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