GENERALIZATION OF COWLING THEOREM
An extension of Cowling's neutral point arguments shows that no axisymmetric poloidal magnetic field can be maintained by self-exciting dynamo action in an electrically-conducting fluid against the dissipative effects of Ohmic heating. This generalizes previous results to cases where the magnet...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1982
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| Summary: | An extension of Cowling's neutral point arguments shows that no axisymmetric poloidal magnetic field can be maintained by self-exciting dynamo action in an electrically-conducting fluid against the dissipative effects of Ohmic heating. This generalizes previous results to cases where the magnetic field can be non-steady, the fluid compressible and the (scalar) coefficient of magnetic permeability and electrical conductivity dependent on position and time.-Authors |
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