Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983baicz..34...40s&link_type=abstract
Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 34, Jan. 1983, p. 40-44.
Astronomy and Astrophysics
Astronomy
Astronomical Photometry, Prognoz Satellites, Satellite-Borne Instruments, Solar Instruments, Solar X-Rays, X Ray Spectra, Satellite Observation, Solar Flares, Spectral Bands, Temperature Profiles
Scientific paper
Following the method of multi-temperature analysis of hard X-ray spectra presented by B. Sylwester et al. (1981), in the present paper the authors analyse the hard X-ray radiation measured aboard the Prognoz 5 satellite by means of a Czechoslovak photometer. The analysis concerns the Feb. 11, 1977 flare event. Using the fluxes measured in 4 energy bands they have calculated the differential emission measure distributions for selected moments during the rise, maximum and decay phases of the flare development. The results of the analysis show that, in the case of the flare in question, the hard X-ray radiation from 6 to 60 keV could have been produced by purely thermal, multi-temperature plasma.
Farnik Frantisek
Jakimiec Jerzy
Sylwester Barbara
Sylwester Janusz
Valnicek Boris
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