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Discrepancies between calculated and observed Fexvii and Nixix solar coronal lines

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Abstract

We extend the 36-levels model atom Fe+16 of Loulergue and Nussbaumer (1973) to a 51-levels atom includingn=4 configuration. Our earlier conclusion that relative intensities among the Fexvii lines are not sufficiently sensitive to variations in electron densities and electron temperature to deduce these parameters from observed intensity ratios still holds. Discrepancies between calculated and observed relative intensities in Fexvii and Nixix are attributed to blends or misidentifications.

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Authors and Affiliations

  1. Observatoire de Paris, Meudon, France

    M. Loulergue

  2. Atomic Physics and Astrophysics Group, Eidgenössische Technische Hochschule, Zürich, Switzerland

    H. Nussbaumer

Authors
  1. M. Loulergue
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  2. H. Nussbaumer
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Loulergue, M., Nussbaumer, H. Discrepancies between calculated and observed Fexvii and Nixix solar coronal lines. Astrophys Space Sci 38, 365–368 (1975). https://doi.org/10.1007/BF00647136

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  • DOI: https://doi.org/10.1007/BF00647136

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