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Determination of constant α force-free solar magnetic fields from magnetograph data

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Abstract

At first it is shown that a magnetic field being force-free, i.e. satisfying ▽ × B = αB, with α = constant (α ≠ 0) in the whole exterior of the Sun cannot have a finite energy content and cannot be determined uniquely from only one magnetic field component given at the photosphere. Then the boundary value problem for a semi-infinite column of arbitrary cross section is solved by a Green's function method.

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Authors and Affiliations

  1. Zentralinstitut für solar-terrestrische Physik, Sonnenobservatorium Einsteinturm, DDR-15, Potsdam, Telegrafenberg, Germany

    N. Seehafer

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  1. N. Seehafer
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Seehafer, N. Determination of constant α force-free solar magnetic fields from magnetograph data. Sol Phys 58, 215–223 (1978). https://doi.org/10.1007/BF00157267

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  • DOI: https://doi.org/10.1007/BF00157267

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