Other
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...386..364l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 386, Feb. 10, 1992, p. 364-370.
Other
35
Emission Spectra, Extreme Ultraviolet Radiation, Helium, Line Spectra, Solar Atmosphere, Solar Flares, Astronomical Models, Chromosphere, Radiative Transfer, Ultraviolet Spectra
Scientific paper
A model in which the solar chromosphere is heated by explosive events is developed and used to interpret XUV spectra of He I and He II in impulsive flares observed by the Skylab spectroheliograph. From a comparison of relative line intensities from He I and He II emitted within the flares, the model establishes sizes, durations, and frequencies for the individual events and, by comparison with lines from other elements observed in the same flares, is demonstrated to be consistent with a helium abundance relative to hydrogen of 0.1 for burst temperatures of 15-18 eV.
Feldman Uri
Laming Martin J.
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