The role of chromospheric condensations in the continuum emission of white-light flares

Details The role of chromospheric condensations in the continuum emission of white-light flares The role of chromospheric condensations in the continuum emission of white-light flares

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...397..694g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 397, no. 2, p. 694-700.

Astronomy and Astrophysics

Astrophysics

15

Chromosphere, Emission Spectra, Solar Atmosphere, Solar Flares, Balmer Series, Condensation, Stellar Models

Scientific paper

A non-LTE atmospheric modeling technique has been used to study the relations between the chromospheric condensation and the continuum emission in order to explore the possibility that the chromospheric condensations may be responsible for white-light flare emissions. It is found that the chromospheric condensation could produce the continuum enhancement only when it has a temperature of 9000-10,000 K and only when the transition region moves downward below to generate than 0.0001 g/sq cm. If the temperature within the condensation is equal to or lower than that of neighboring region, the continuum is either not affected or even decreased. The role of the condensation in producing the continuum seems to be independent of the chromospheric state. Taking the quiet-sun model as a background, the enhanced continuum usually exhibits a reddish distribution with a Balmer jump. Taking the penumbra model as background, the calculated continuum enhancement may exhibit a flat or a bluish distribution with a Balmer jump.

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