Turbulent transport of magnetic fields. I - A simple mechanical model. II - The role of fluctuations in kinematic theory
Abstract
In the present paper, a simple mechanical model is analysed that reproduces a few basic features of the average magnetic field in the Sun and the Earth. It provides an intuitive picture of how the α-effect operates in combination with differential rotation. The model serves three purposes: (1) it enhances an intuitive understanding of the behaviour of a magnetic field in turbulent fluids; (2) it shows that kinematic models (and ultimately, non-linear models also) must allow for fluctuations as one is essentially dealing with a stochastic process; (3) it serves as a starting point for a re-analysis of the kinematic dynamo problem.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1987
- Bibcode:
- 1987A&A...171..348H
- Keywords:
-
- Astronomical Models;
- Dynamo Theory;
- Geomagnetism;
- Solar Magnetic Field;
- Turbulent Flow;
- Kinematic Equations;
- Stellar Rotation;
- Stochastic Processes;
- Plasma Physics