Study of the post-flare loops on 29 July 1973. IV - Revision of T and NE values and comparison with the flare of 21 May 1980

Details Study of the post-flare loops on 29 July 1973. IV - Revision of T and NE values and comparison with the flare of 21 May 1980 Study of the post-flare loops on 29 July 1973. IV - Revision of T and NE values and comparison with the flare of 21 May 1980

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...78..271s&link_type=abstract

Solar Physics, vol. 78, June 1982, p. 271-285. Research supported by the Koninklijke Nederlandse Akademie van Wetenschappen;

Physics

30

Coronal Loops, Electron Density (Concentration), Solar Flares, Solar X-Rays, Temperature Distribution, Explorer 44 Satellite, H Alpha Line, Magnetic Field Configurations, Solar Activity, Solar Maximum Mission, Spatial Distribution

Scientific paper

Revised temperature and density estimates are provided in a synthesis of previous studies of the two-ribbon solar flare of July 29, 1973 and results are compared with observations of a similar event by the Solar Maximum Mission on May 21, 1980. Photographs taken through X ray filters permitted determination of the spatial distribution of temperature and density in the loop system and variations over time. The entire growth process of the flare is detailed, including the magnetic field configurations and the enlargement of the Hα flare ribbon separation distance. The temperature is revised to 8.8 million K during maximum soft X ray emission and 6.8 million K at the appearance of the last Hα loops. The 1973 flare is noted to have occurred in an old, decaying spotless region, producing higher loops at lower density than the 1980 flare, which displayed ribbons imbedded in a sunspot group.

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