Advection-Dominated Thick Accretion Disks

Details Advection-Dominated Thick Accretion Disks Advection-Dominated Thick Accretion Disks

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1053..339g&link_type=abstract

OBSERVATIONAL EVIDENCE FOR BLACK HOLES IN THE UNIVERSE: Proceedings of the 2nd Kolkata Conference on Observational Evidence for

Computer Science

Infall, Accretion, And Accretion Disks, Galactic Nuclei, Circumnuclear Matter, And Bulges, Hydrodynamics

Scientific paper

We revisit the vertical structure of black hole accretion disks in spherical coordinates. By comparing the advective cooling with the viscous heating, we show that advection-dominated disks are geometrically thick, i.e., with the half-opening angle Δθ>2π/5, rather than slim as supposed previously in the literature. We suggest that such advection-dominated thick disks around stellar mass black holes may account for the brightest ultraluminous X-ray sources.

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