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Magnetic fields in quiescent prominences

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Abstract

We discuss the longitudinal component of the magnetic field, B ∥, based on data from about 135 quiescent prominences observed at Climax during the period 1968–1969. The measurements are obtained with the magnetograph which records the Zeeman effect on hydrogen, helium and metal lines. Use of the following lines, Hα; Hei, D3, Hei, 4471 Å; Nai, Di and D2, leads to the same value for the observed magnetic field component in these prominences. For more than half of the prominences their mean field, B ∥, satisfy the inequalities 3 G ⩽ B ∥ ⩽ 8 G, and the overall mean value for all the prominences is 7.3 G. As a rule, the magnetic field enters the prominence on one side and exits on the other, but in traversing the prominence material, the field tends to run along the long axis of the prominence.

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Authors and Affiliations

  1. High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colo., U.S.A.

    Einar Tandberg-Hanssen

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  1. Einar Tandberg-Hanssen
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The National Center for Atmospheric Research is sponsored by the National Science Foundation.

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Tandberg-Hanssen, E. Magnetic fields in quiescent prominences. Sol Phys 15, 359–371 (1970). https://doi.org/10.1007/BF00151842

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  • DOI: https://doi.org/10.1007/BF00151842

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