A discussion of the origin of solar white-light flares

Details A discussion of the origin of solar white-light flares A discussion of the origin of solar white-light flares

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997acasn..38..394g&link_type=abstract

Acta Astronomica Sinica, vol. 38, p. 394

Physics

Optics

2

Solar Flares, Chromosphere, Continuous Radiation, Photosphere, Nonthermal Radiation, Opacity, Atmospheric Optics

Scientific paper

At present there are three kinds of explanations of the origin of solar white-light flares. One view holds that the chromospheric condensation is responsible for the continuous emission of white-light flares, either belonging to type I or type II. Another interpretation says that the nonthermal effects may increase the opacity of the upper photosphere and consequently the deeper layers can be heated radiatively. Still another view is that strong chromospheric heating can radiatively heat the temperature minimum region and the upper photosphere. We examine each of these mechanisms and point out that none of them may be considered to be quite satisfactory in interpreting the continua of white-light flares. Then a possible outlet is tentatively proposed, which may take into account both chromospheric condensation and nonthermal effects. A semiempirical model will be required to justify this suggestion.

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