Chaos in accretion disk dynamos?
Abstract
Accretion disks appear to be favourable places for dynamo action, because of their strong differential rotation. A simple estimate of the strength of an accretion disk dynamo indicates that it will be highly nonlinear. In spite of this, most studies hitherto have assumed a linear model for the dynamo. The authors investigate nonlinear, axisymmetric mean-field dynamos in accretion disks in order to study the route to chaotic solutions in certain parameter regimes. The authors find a sequence of bifurcations that lead eventually to chaos. Finally, the physical significance of these results is discussed.
- Publication:
-
Chaos Solitons and Fractals
- Pub Date:
- October 1995
- DOI:
- 10.1016/0960-0779(94)00194-U
- Bibcode:
- 1995CSF.....5.1975T
- Keywords:
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- Accretion Disks: Dynamo Theory;
- Accretion Disks: Chaotic Motions