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Key Problems of Flat Objects Dynamo Theory and Ways of Their Solution

  • F. Krause (a1), R. Meinel (a1), D. Elstner (a1) and G. Rüdiger (a1)

Abstract

The present status of galactic dynamo theory is discussed. A new concept which allows the determination of marginal dynamo numbers for axisymmetric as well as non-axisymmetric large-scale magnetic field modes in axisymmetric disks is applied to a simple galaxy model. The results obtained so far show that a preference of non-axisymmetric fields can only be expected if the α-effect is highly anisotropic and the differential rotation is not too strong. Mostly axisymmetric-spiral fields have to be expected.

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References

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Key Problems of Flat Objects Dynamo Theory and Ways of Their Solution

  • F. Krause (a1), R. Meinel (a1), D. Elstner (a1) and G. Rüdiger (a1)

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