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Nonlinear Interaction Between Magnetic Fields and Spiral Arms

Published online by Cambridge University Press:  19 July 2016

M. Chiba
M. Chiba*
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, W-5300 Bonn, Germany

Abstract

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The evolution of galactic magnetic fields under the influence of spiral arms is investigated numerically by 2-dimensional simulation. We compute several models, especially when the swing-excitation mechanism works. We consider also the modification of the mean velocity fields driven by the Lorentz force of the growing magnetic fields. The characteristic structure of magnetic fields around the arm in each model is compared with the observations.

Keywords

Galactic Magnetic FieldsSpiral ArmsNonlinear Interaction
Type
8. Magnetic Fields in Galaxies: Dynamo Theory
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 373 - 374
Copyright
Copyright © Kluwer 1993 

References

Tubbs, A.D. 1980, Ap. J. , 239, 882.CrossRefGoogle Scholar