Abstract
Observations of UV-line intensities referring to the whole undisturbed Sun are used to investigate the chromosphere-corona transition region. For the evaluation of the integral representing the theoretical line intensities it appears to be an improvement to consider not the temperature gradient but the conductive flux to be nearly constant in the line-forming region. The variation of conductive flux with temperature calculated in this way is indeed small. Moreover, in the conductive flux versus temperature diagram the scatter of points is found to be less with coronal values of relative abundances than with photospheric ones. The results are used for determining the temperature structure of the transition region.
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A short report about this investigation was presented at the recent IAU Colloquium No. 14 on Ultraviolet and X-ray Spectroscopy in Astrophysical and Laboratory Plasmas held in Utrecht, the Netherlands, August 1971. An abstract of it is to appear in Space Science Reviews 11 (1972).
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Elwert, G., Raju, P.K. Temperature structure and conductive flux in the chromosphere-corona transition region. Sol Phys 25, 319–328 (1972). https://doi.org/10.1007/BF00192330
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DOI: https://doi.org/10.1007/BF00192330