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Oscillations of the Hα emission in solar prominences

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Abstract

The time dependence of Doppler shift and line-center intensity is simultaneously observed for the Hα emission of three solar prominences, each one during about two hours. Doppler oscillations with periods near one hour and amplitudes between 1 and 2 km s−1 are conspicuously visible in the recordings of all three prominences. Fourier analysis yields periods of 50, 60, and 64 min, as well as slight indications of short periods near 3 and 5 min. No oscillations are found in the line-center brightness.

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Authors and Affiliations

  1. Universitäts-Sternwarte, D-34, Göttingen, Germany

    E. Wiehr & H. Balthasar

  2. Institut d'Astrophysique, F-75014, Paris, France

    G. Stellmacher

Authors
  1. E. Wiehr
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  2. G. Stellmacher
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  3. H. Balthasar
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Wiehr, E., Stellmacher, G. & Balthasar, H. Oscillations of the Hα emission in solar prominences. Sol Phys 94, 285–288 (1984). https://doi.org/10.1007/BF00151318

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  • DOI: https://doi.org/10.1007/BF00151318

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