Investigation of five white light flares

Physics

Scientific paper

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12

H Alpha Line, Light (Visible Radiation), Solar Flares, Chromosphere, Continuous Spectra, Fine Structure, Solar Activity, Solar Atmosphere, Solar Limb, Solar Spectra, Sunspots

Scientific paper

White light flares (WLF) are investigated on the basis of original observations of five such events. The structure of WLF is described, and it is noted that WLF appear as two bright cores situated at the upper border of faculae. The lifetimes, size, brightness, and fine structure of WLF are calculated; disk and limb flares are distinguished; and the continuous and H-alpha emissions of five flares are compared. It is shown that WLF coincide positionally with the brightest knots of H-alpha flares, that the continuum and H-alpha energies are comparable, and that the energy emitted from a unit area in integral light is larger than the energy in monochromatic light by 2 orders of magnitude.

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