Abstract
view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Hypothesis of Localized Coronal Line Emission. Billings, D. E. ; Lehman, R. C. Abstract Line profile measurements present strong evidence that the red and green coronal lines are produced in different volume elements along a line of sight, even when the structures seen by the two lines appear to be identical. From this we conclude that quite high-temperature gradients exist in the corona. In the presence of such temperature gradients it is possible for a temperature difference of several hundred thousand degrees to exist between ions and electrons, which could explain in part at least broad coronal line profiles. We postulate that emission in the red and green coronal lines occurs only in cooler parts of the corona, in the vicinity of energy sinks and large temperature gradients. Publication: The Astronomical Journal Pub Date: June 1962 DOI: 10.1086/108888 Bibcode: 1962AJ.....67S.111B full text sources ADS |
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