Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74..129w&link_type=abstract
Astronomy and Astrophysics, vol. 74, no. 2, Apr. 1979, p. 129-132. NOAA-NSF-supported research
Astronomy and Astrophysics
Astronomy
Satellite-Borne Instruments, Solar Flares, Solar X-Rays, Spaceborne Astronomy, Filtergrams, Proportional Counters, Satellite Observation, Skylab Program, X Ray Telescopes
Scientific paper
Results of analysis of Skylab X-ray proportional counter data (10-s averages) and X-ray telescope filtergrams for the August 9, 1973 (SN/M2) subflare from McMath 12474 (NOAA AR 185) are presented. The event flux profiles and profiles of temperature, volume emission-measure, and a quantity equivalent to thermal energy content are shown. Using the proportional counter data, a peak temperature in excess of 20,000,000 K at 1552:05 UT, a peak volume emission measure of 7 x 10 to the 48th per cu cm at 1553:25 UT, and a peak value of thermal energy content of 2 x 10 to the 16th evgs/cm to the 3/2 power at 1552:45 UT were derived. Based on the analysis of spatially-resolved X-ray images during the period near flare-peak through flare-decay, the flare is observed to be both intense and compact and to consist of at least two identifiable loops whose volumes remained essentially unchanged throughout the event.
Smith Jeffrey B.
Speich David M.
Wilson Ryan M.
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