Soft X-Ray Flare Indices in 1981 and 1982 Years

Details Soft X-Ray Flare Indices in 1981 and 1982 Years Soft X-Ray Flare Indices in 1981 and 1982 Years

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cosks..29..163a&link_type=abstract

Contributions of the Astronomical Observatory, vol. 29, p. 163

Mathematics

Logic

Goes Satellites, Solar X-Rays, Synchronous Meteorological Satellite, Solar Flares, Long Duration Exposure Facility, Spectroheliographs, Sun

Scientific paper

The heliographic longitudinal distribution of the daily soft X-ray flare index (FI) values is given for 1981 and 1982 years. The days, when FI exceeds the value 500 (300) are indicators of extremely large LDE (Long Duration Exposure) activity and they are as follows: 1979 - 3 (6) days; 1980 - 3 (12); 1981 - 6 (16) and maximum in 1982 - 8 (16) days. The FI was determined from the daily continuous SMS-GOES (Synchronous Meteorological Satellite-Geostationary Operational Environmental Satellites) profile of the solar soft X - ray flux (0.1 - 0.8 nm), as published in SGD. The left (right) columns of Table 1 comprise the 1981 (1982) daily data. The Eastern (E), Central (C) and Western (W) distribution of the LDE-type Fls, as well as a daily Fl computed from the impulsive (1) - type flares, were so far published from 1969 to 1982.

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