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Mode Transitions of Black Hole Accretion Disks

Published online by Cambridge University Press:  26 May 2016

Ju-Fu Lu ,
Wei-Min Gu  and
Yi-Qing Lin
Ju-Fu Lu
Affiliation:
Department of Physics, Xiamen University, Xiamen 361005, China
Wei-Min Gu
Affiliation:
Department of Physics, Xiamen University, Xiamen 361005, China
Yi-Qing Lin
Affiliation:
Department of Physics, Xiamen University, Xiamen 361005, China

Abstract

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The model of a bimodal accretion disk, which consists of an Shakura-Sunyaev disk (SSD) as the outer part and an advection-dominated accretion flow (ADAF) as the inner part, has been quite successfully applied to many black hole X-ray binaries. However, the precise physical mechanism through which such a transition occurs remains a matter of debate. We review briefly SSD-ADAF transition mechanisms presented in the literature, and offer a proposal that in the case of moderately strong viscosity, the thermal instability of a radiation pressure-supported SSD can trigger the transition.

Type
Part 3 Theoretical Considerations
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 91 - 94
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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