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Structure of the inner corona derived from observations of the eclipse of 16 February 1980

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Abstract

The volume emission measure EM(V) of the arch systems of the inner corona, not immediately associated with developed active regions, has been determined by analyzing the pictures of the green corona. It was found that the EM(V)-values of these systems are substantially lower than those obtained from X-ray data for the active regions, and this fact should be taken into account in interpreting extra-atmospheric observations. The combined investigation of data on the radiation of the corona in the green line and in the continuum enables one to determine the total extension of the radiating matter, (0.5–1) × 1010 cm, as well as the density in the separate arches, ≈ 1.5 × 109 cm-3. It is assumed that matter exists between the arches with a density of ≤ 108 cm-3.

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Authors and Affiliations

  1. Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Academy of Sciences of the USSR, Moscow, U.S.S.R.

    O. G. Badalyan & M. A. Livshits

  2. Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, Czechoslovakia

    J. Sýkora

Authors
  1. O. G. Badalyan
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  2. M. A. Livshits
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  3. J. Sýkora
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Badalyan, O.G., Livshits, M.A. & Sýkora, J. Structure of the inner corona derived from observations of the eclipse of 16 February 1980. Sol Phys 93, 143–153 (1984). https://doi.org/10.1007/BF00156659

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  • DOI: https://doi.org/10.1007/BF00156659

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