On the inverse dynamo problem in a simplified mean-field model |
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Authors: | R Kaiser |
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Institution: | 1. Fakult?t für Mathematik und Physik , Universit?t Bayreuth , Bayreuth, Germany ralf.kaiser@uni-bayreuth.de |
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Abstract: | Inverse dynamo theory seeks to gain information about the motion of a liquid conductor from measurements of the magnetic field in the surrounding vacuum. We consider here a highly simplified model problem, namely a steady α2-dynamo in plane geometry with an α-field varying only in the z-direction normal to the conductor–vacuum interface. Based on perturbation theory about constant-α solutions, we find as many integral conditions on α(z) as modes are present in the vacuum field. This result is corroborated by the complete solution of a special case. |
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Keywords: | Dynamo theory α2-Dynamo inverse dynamo problem |
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