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flare star
(redirected from Flare stars)

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flare star  (flâr)
A variable star that sporadically displays sudden increases in brightness, sometimes becoming six times as bright in a matter of only a few minutes, after which it gradually fades back to its normal brightness. The cause of this phenomenon is thought to be an event similar to a solar flare, but on a more intense scale with a much higher emission of x-rays.
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Noun1.flare star - a red dwarf star in which luminosity can change several magnitudes in a few minutes
red dwarf, red dwarf star - a small, old, relatively cool star; approximately 100 times the mass of Jupiter
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Thus, proof of common lineage and similar age between Proxima and Alpha might encourage astrophysicists to rethink their ideas about flare stars, Matthews says.
Proxima Centauri: Alpha's sibling? by Cowen, Ron / Science News
In analyzing their discovery, the observers rule out possible foreground objects in our own galaxy, such as flare stars, asteroids and dwarf novas, on grounds that the object, though variable, does not vary quickly enough for a flare star.
When quasars have supernovas by Thomsen, Dietrick E. / Science News
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