Investigation of non-uniform heating during the decay phase of solar flares

Details Investigation of non-uniform heating during the decay phase of solar flares Investigation of non-uniform heating during the decay phase of solar flares

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..126..177s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 126, March 1990, p. 177-184. Research supported by Polska Akademia Nauk.

Physics

7

Backscattering, Gravity Waves, Ionospheric Propagation, Polar Regions, Radar Measurement, Diurnal Variations, Frequency Distribution, Labrador, Wave Propagation, Wavelengths

Scientific paper

X-ray spectra of 13 solar flares obtained by the Bent Crystal Spectrometer on the Solar Maximum Mission are analyzed. The observed ratio of T(Fe)/T(Ca) is examined, where T(Fe) and T(Ca) are the temperatures obtained from the Fe XXV and Ca XIX spectra, respectively. The observed ratios cannot be explained by a model consisting of a single, uniformly heated loop, with a constant or variable cross-sectional area. It is suggested that this problem may be solved by introducing some distribution of the heating function across the flaring loop. This model has been tested by detailed calculations.

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