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Motions in solar magnetic tubes

I: The downflow

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Abstract

The line-centre-magnetogram technique has been used to measure the average velocity in magnetic elements in plages and isolated magnetic elements (including dipoles) in Ca ii 8542, Mg i 5183, Fe i 8688 and C i 9111. The velocities vary from 0.6 km s−1 downflow in the line of deepest origin to zero in the highest. The smooth curve obtained by combining these with the results of other investigators is in conformity with Giovanelli's (1977) theory of inflow in the neighborhood of the temperature minimum.

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Authors and Affiliations

  1. National Measurement Laboratory, CSIRO, Sydney, Australia

    R. G. Giovanelli

  2. Kitt Peak National Observatory, Tucson, Ariz., U.S.A.

    C. Slaughter

Authors
  1. R. G. Giovanelli
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  2. C. Slaughter
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Additional information

This material is based upon research supported by the National Science Foundation under its contract No. AST 74-04129 with the Association of Universities for Research in Astronomy, Inc., for management, operation and maintenance of the Kitt Peak National Observatory.

Visiting Astronomer, Kitt Peak National Observatory.

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Giovanelli, R.G., Slaughter, C. Motions in solar magnetic tubes. Sol Phys 57, 255–260 (1978). https://doi.org/10.1007/BF00160099

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  • DOI: https://doi.org/10.1007/BF00160099

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