Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...265..530w&link_type=abstract
Astrophysical Journal, Part 1, vol. 265, Feb. 1, 1983, p. 530-534.
Astronomy and Astrophysics
Astrophysics
45
Line Spectra, Solar Flares, Solar X-Rays, Stellar Models, Ultraviolet Spectra, Oxygen Spectra, Solar Maximum Mission, Spatial Distribution, Spectral Resolution, Temporal Distribution
Scientific paper
Several fast impulsive phase solar flare bursts were observed by the Solar Maximum Mission instruments on 1980 November 8. The bursts were seen to be coincident in the O V 1371 Å line formed at 2.5 × 105 K and in 25-300 keV X-rays, to within the resolution time of 1 s. This lack of time difference is inconsistent with models for these flares in which the hard X-rays are produced at the top of a loop, followed by the formation of a thermal conduction front which travels to the footpoint where a UV burst is produced by heating. Models in which both X-rays and UV radiation are produced at the footpoint, or an electron beam transmits energy between loop top and footpoint is less than 1 s, are allowed.
Orwig Larry E.
Poland Arthur I.
Shine Richard A.
Woodgate Bruce E.
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