The POST flare loops observed at the total eclipse of February 16, 1980

Details The POST flare loops observed at the total eclipse of February 16, 1980 The POST flare loops observed at the total eclipse of February 16, 1980

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..105..133h&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 105, May 1986, p. 133-148. Research supported by the Ministry of Education, Science, and Cu

Physics

14

Coronal Loops, Solar Eclipses, Solar Flares, Calcium, Calibrating, Electron Density (Concentration), H Alpha Line, Photographs

Scientific paper

A post flare loop system was observed on the west limb at the total solar eclipse of February 16, 1980 in Kenya. After analyzing the monochromatic images and the flash spectra, it was found that the lower part of the post flare loop system is characterized mainly by distinct cool loops of H-alpha and Fex6374. Fex6374 emitting plasma is highly concentrated in the loops. The 6374 loops are broader in diameter and located very close to but a little higher than the corresponding H-alpha loops. The electron densities of the dense part in 8 x 10 to 9th/cu cm and Fex6374 loops are 10 to the 11th/cu cm and 6 x 10 to the 9th/cu cm, respectively. The Ca XV emitting region is confined to the upper part of the post flare loops. The electron density of this hot region is estimated as 8 x 10 to the 9th/cu cm from the CaXV line intensity ratio, I(5694)I(5445A). These observational results led us to construct an empirical model of the post flare loop system which is consistent with the reconnection model of Kopp and Pneuman (1976).

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