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单词 coronal rain
释义
coronal rain

Astronomy
  • Globules of plasma seen in Ηα‎ light descending along curved paths towards the chromosphere. They are the final stage in the development of loop prominences, which are produced by large solar flares. Several hours after the flare has occurred the prominence appears to fragment and the plasma cools and condenses, draining back to the Sun’s surface along the magnetic field that formed the initial prominence. The descending plasma is known as coronal rain.


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