Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975sva....18..750s&link_type=abstract
(Astronomicheskii Zhurnal, vol. 51, Nov.-Dec. 1974, p. 1258-1271.) Soviet Astronomy, vol. 18, May-June 1975, p. 750-757. Transl
Astronomy and Astrophysics
Astronomy
Emission Spectra, H Alpha Line, Light Emission, Solar Flares, Electromagnetic Radiation, Fine Structure, Flux Density, Line Spectra, Luminous Intensity, Solar Spectra, Time Response
Scientific paper
Five white light flares (WLF) are examined on the basis of original observational data. The form, spatial location, duration, and fine structure of WLF are described, and their observation in H-alpha is discussed. The development of WLF in H-alpha is shown to be characterized by a large spread in the H-alpha wings, the rapid increase and decrease of these wings, and rapid flaring and increased brightness of nodes in regions of continuous emission. Staggering of loop systems and ejecta from WLF centers during flare-up may indicate that magnetic force lines emerge into outer layers and interact with the magnetic fields in those layers. The total energy output of WLF in the continuum and in H-alpha is found to be comparable, but the flow of energy per unit surface is two to three times greater in WLF than in H-alpha flares. Statistical counts show that WLF phenomena should be recorded during all rapid solar flares under conditions of regular photospheric surveillance.
Korobova Z. B.
Slonim Yu. M.
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