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Detection of solar flares when the sun is observed as a star
1982
Publications of the Astronomical Society of the Pacific
Preserved Fulltext
Solar flares are detectable in unfocused sunlight from minute, transient, enhancements in the center of Fraunhofer Call K spectrum line. A survey of flare-frequency in other solar-type stars could establish the normalcy of the sun's present activity cycle.
doi:10.1086/131051
fatcat:ok4mfgn2nvesvfnu2txp3jgdiy