[Table of Contents]

Plasma and Fusion Research

Volume 1, 001 (2006)

Rapid Communications

WKB Analysis of Axisymmetric Magneto-Rotational Instability in a Thin Accretion Disk
Masaru FURUKAWA1), Vinod KRISHAN1,2), Makoto HIROTA1) and Zensho YOSHIDA1)
Graduate School of Frontier Sciences, The University of Tokyo
Indian Institute of Astrophysics
(Received 25 October 2005 / Accepted 11 November 2005 / Published 26 January 2006)


The temporal behavior of axisymmetric magneto-rotational instability in a thin accretion disk is analyzed via the Wentzel-Kramars-Brillouin (WKB) method. The height of the thin disk is used as a small parameter. It is found that the oscillation of the envelope of the mode accelerates with time because of the density distribution in the direction of the disk height.


magneto-rotational instability, accretion disk, WKB analysis

DOI: 10.1585/pfr.1.001


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This paper may be cited as follows:

Masaru FURUKAWA, Vinod KRISHAN, Makoto HIROTA and Zensho YOSHIDA, Plasma Fusion Res. 1, 001 (2006).