Flares Increase Ultraviolet Radiation
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real stellar flaresStudy Finds
•Science
Science
Explosive red dwarf stars could harm chances for alien life on nearby planets
79% Informative
Study finds stellar flares emit far more high-energy ultraviolet light than scientists previously thought.
Astronomers analyzed data from NASA ’s Galaxy Evolution Explorer ( GALEX ) telescope.
The study focused particularly on red dwarf stars, cosmic lightweights that are smaller and cooler than our Sun .
Red dwarf stars make up about 75% of all stars in our galaxy, making them the most common type of stellar neighbor.
98% of observed flares showed higher FUV/ NUV ratios than predicted by the standard 9,000 K blackbody model.
The median ratio of FUV to NUV energy was 0.50 , about three times higher than expected.
The team also found tentative correlations between FUV output and both stellar type and flare energy.
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