Last Updated
：2025/12/01
gravity darkening
Noun
uncountable
Japanese Meaning
急速に自転する星が遠心力により赤道部が膨らみ、赤道では表面重力が低く温度が下がり暗く見える一方、極部では表面重力が高く温度が上がり明るくなるという現象。
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(physics, astronomy) The phenomenon of a star rotating so rapidly that it is oblate, with a larger radius and thus lower surface gravity at the equator (which is thus cooler and darker: gravity-darkened), and higher surface gravity at the poles (which are hotter and brighter: gravity brightened).
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gravity darkening
Astronomers observed gravity darkening on the rapidly rotating star, which made its equator appear cooler and dimmer than its poles.
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Astronomers observed gravity darkening on the rapidly rotating star, which made its equator appear cooler and dimmer than its poles.
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