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Wikipedia definition
1. Flare starA flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes. It is believed that the flares on flare stars are analogous to solar flares in that they are due to magnetic reconnection in the atmospheres of the stars. The brightness increase is across the spectrum, from X rays to radio waves. The first known flare stars were discovered in 1924. However, the best-known flare star is UV Ceti, discovered in 1948.
Read “Flare star” on English Wikipedia
Read “閃光星” on Japanese Wikipedia
Read “Flare star” on DBpedia

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