Flare plasma diagnostics based on the soft X-ray photometric data from GOES and Prognoz

Details Flare plasma diagnostics based on the soft X-ray photometric data from GOES and Prognoz Flare plasma diagnostics based on the soft X-ray photometric data from GOES and Prognoz

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..141..127g&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 141, no. 1, p. 127-146.

Physics

12

Photometry, Plasma Diagnostics, Solar Flares, Solar X-Rays, X Ray Spectra, Goes 6, Prognoz Satellites, Solar Corona

Scientific paper

The physical parameters of flare plasma, obtained by solar soft-X-ray photometers aboard the GOES 6 and Prognoz 9 satellites are compared for the same solar events, using a specially developed method which makes possible the comparison between the two instruments. An analysis is also carried out of changes in the flare plasma characteristics during the rise and decay phases of the solar events, using the dissimilar response characteristics of the X-ray sensors to discriminate the nonisothermal from isothermal epochs and to identify some of the properties of these epochs. Results of the analysis indicate that, at the initial stage, the plasma is strongly nonisothermal. It thermalizes gradually, becoming mainly isothermal during the decay phase.

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