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Global, Nonaxisymmetric Instabilities in Magnetized Accretion Disks

Published online by Cambridge University Press:  12 April 2016

Charles Curry  and
Ralph E. Pudritz
Charles Curry*
Affiliation:
Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada
Ralph E. Pudritz
Affiliation:
Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada
*
Present address: Dept. of Astronomy, University of California, Berkeley, CA, USA94720.

Abstract

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We investigate the global stability of a differentially rotating, ideal MHD fluid shell to linear, nonaxisymmetric perturbations. This system, which approximates an accretion disk near its midplane, is known to be unstable to both axisymmetric and nonaxisymmetric local perturbations. Keplerian disks, which are entirely stable in the hydrodynamic case, show the most rapid growth for radially extended shells.

Type
Part 7. Local and Global Instabilities and Disk Perturbations
Information
International Astronomical Union Colloquium , Volume 163: Accretion Phenomena and Related Outflows , 1997 , pp. 339 - 343
Copyright
Copyright © Astronomical Society of the Pacific 1997

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