Spectral analysis of a white-light flare

Details Spectral analysis of a white-light flare Spectral analysis of a white-light flare

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...262..597s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 262, no. 2, p. 597-605.

Astronomy and Astrophysics

Astrophysics

1

Line Spectra, Solar Atmosphere, Solar Flares, Spectrum Analysis, Electron Density Profiles, Line Shape, Plasma Spectra

Scientific paper

A flare phenomenon was observed on 26 September 1963 at the Crimean Astrophysical Observatory. Using an echelle spectrograph the flare spectra from 3500 to 6700 were obtained with a dispersion of 0.56 to 0.30 A/mm. The flare lasted from 06:38 UT to 09:24 UT, with the maximum at 07:21 UT and located N 15, W 75. Twenty spectra were recorded during the flare. Our analysis concerns only seven time sequences which were chosen according to the quality of the spectra; among them four belong to the earlier phase. The line profiles and the halfwidths of the Balmer series from H-alpha to H(14) were measured in order to obtain electron density by using Stark broadening, and the continuum intensity as a function of wavelength is studied in order to deduce the emission mechanism.

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