Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330..480c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 330, July 1, 1988, p. 480-492.
Astronomy and Astrophysics
Astrophysics
15
Bursts, Line Spectra, Solar Flares, Solar X-Rays, Temporal Resolution, Ultraviolet Radiation, Electron Beams, Energy Transfer, High Resolution, Light Curve, Magnetohydrodynamic Waves, Spectrum Analysis, Thermal Conductivity
Scientific paper
The impulsive phase of solar flares has been simultaneously observed in the ultraviolet O V line, the UV continuum, and hard X-rays with a time resolution of 0.128 s by the SMM satellite. A close time correspondence between the three impulsive components is found, with the best correlation being at the peak of the impulsive phase. Individual bursts or fast features in the O V and the UV continuum are shown to lag behind the corresponding hard X-ray features. None of the considered energy transport mechanisms (thermal conduction, a nonthermal electron beam, electron hole boring, UV radiation, and Alfven waves) are able to consistently account for the observed temporal correlations.
Cheng Chung-Chieh
Orwig Larry E.
Tandberg-Hanssen Einar
Vanderveen K.
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