Physics
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...53..449d&link_type=abstract
Solar Physics, vol. 53, Aug. 1977, p. 449-464. Research supported by the Centre National de la Recherche Scientifique.
Physics
10
Electron Density Profiles, Solar Corona, Solar Cycles, Solar Electrons, Electrophotometers, International Quiet Sun Year, Isophotes, Plasma Jets, Polarimetry, Polarized Light, Solar Activity, Solar Limb, Solar Prominences
Scientific paper
The coronal electron survey carried out with the aid of the solar photoelectric polarimeters at Meudon and Pic-du-Midi Observatories have revealed some persistent coronal features. This paper discusses a special kind of fan-shaped feature called 'lame coronale', or coronal blade, above quiescent prominences. For one streamer, calculations give an electron density at 60,000 km above the surface of 150 million per cu cm, a total number of 14 times 10 to the 39th power electrons, a hydrostatic temperature of 1.7 million K, and a total thermal energy of 1 times 10 to the 31st power ergs. When a new emerging active center disturbed the area, the 'en lame' feature was replaced by a nonelongated streamer, with electron densities three times higher than in the 'en lame' feature but with only one-third the total number of electrons.
Dollfus Audouin
Martres Marie-Josephe
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