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Radio and soft X-ray evidence for dense non-potential magnetic flux tubes in the solar corona

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Abstract

The source positions of solar radio bursts of spectral types I, III(U) and III(J) and V observed by the Culgoora radioheliograph are found to lie almost radially above soft X-ray loops on pictures taken by the S-056 telescope aboard Skylab. The radio source positions and the X-ray loops occur near magnetic loops on computed potential field maps. However, the magnetic induction required to explain the radio observations is much greater than the computed potential field value at that height. Dense current-carrying magnetic flux tubes emanating from active regions on the Sun and extending to ≲ 1.5R ⊙ above the photosphere provide a satisfactory model for the radio bursts.

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Authors and Affiliations

  1. Division of Radiophysics, CSIRO, Sydney, Australia

    R. T. Stewart & Joan Vorpahl

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  1. R. T. Stewart
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  2. Joan Vorpahl
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Stewart, R.T., Vorpahl, J. Radio and soft X-ray evidence for dense non-potential magnetic flux tubes in the solar corona. Sol Phys 55, 111–120 (1977). https://doi.org/10.1007/BF00150878

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  • DOI: https://doi.org/10.1007/BF00150878

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