Effect of a conducting halo on the structure of galactic magnetic fields.
Abstract
The authors give examples of the magnetic fields generated by dynamo processes in galaxy models consisting of a turbulent disc embedded in a conducting halo. As the halo conductivity increases, the dominant marginally stable mode becomes more spatially extended and more nearly azimuthal. This is because the critical strengths of the α effect is smaller for higher halo conductivity.
- Publication:
-
Nordic-Baltic Astronomy Meeting
- Pub Date:
- 1990
- Bibcode:
- 1990nba..meet...85D
- Keywords:
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- Galactic Disks: Magnetic Fields;
- Galaxies: Magnetohydrodynamics