gravity darkening

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

不可算名詞

(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).

日本語の意味

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。

英語の意味

(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).

このボタンはなに？

Astronomers observed gravity darkening on the rapidly rotating star, which made its equator appear cooler and dimmer than its poles.

天文学者たちは高速回転する恒星で表面重力差による暗化を観測し、そのため赤道が極よりも低温で暗く見えることを確認した。

詳細

意味（1）

(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).