[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)
1)
Graduate School of Frontier Sciences, The University of Tokyo
2)
Indian Institute of Astrophysics
(Received 25 October 2005 / Accepted 11 November 2005 / Published 26 January 2006)

Abstract

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.

Keywords

magneto-rotational instability, accretion disk, WKB analysis

DOI: 10.1585/pfr.1.001

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References

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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).