Resolving the 180-degree ambiguity in vector magnetic field measurements: The ‘minimum’ energy solution |
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| Authors: | Thomas R Metcalf |
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| Institution: | (1) Institute for Astronomy, 2680 Woodlawn Dr., 96822 Honolulu, HI, USA |
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| Abstract: | I present a robust algorithm that resolves the 180-deg ambiguity in measurements of the solar vector magnetic field. The technique simultaneously minimizes both the divergence of the magnetic field and the electric current density using a simulated annealing algorithm. This results in the field orientation with approximately minimum free energy. The technique is well-founded physically and is simple to implement. |
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