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A self-consistent theoretical framework for magnetized accretion discs

Published online by Cambridge University Press:  01 December 2004

Geoffrey V. Bicknell  and
Zdenka Kuncic
Geoffrey V. Bicknell
Affiliation:
Mt. Stromlo Observatory, Research School of Astronomy & Astrophysics, Cotter Rd., Weston, ACT 2611, Australia email: [email protected]
Zdenka Kuncic
Affiliation:
School of Physics, University, Sydney, NSW 2006, Australia email: [email protected]
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Abstract

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Magnetic fields are crucial to the generation of turbulence and the dynamics of accretion and energy dissipation in accretion disks. Nevertheless, until now, there has been no self-consistent analytic formalism that puts the evolution of turbulent magnetic fields on the same footing as other dynamical processes such as mass flow and energy generation. We have developed a self-consistent framework for turbulent, magnetized accretion disks with the aim of studying the processes that power hot coronae. Utilizing this framework we have identified the possible magnetic sources of power for the coronae of black hole accretion disks. The most promising is the Poynting flux associated with the azimuthal-vertical magnetic stress. We also determine how the emission from the disk is modified by the processes that power the corona and related winds.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
ORAL CONTRIBUTIONS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 407 - 410
Copyright
© 2004 International Astronomical Union