Active region
Temporary region on the Sun / From Wikipedia, the free encyclopedia
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In solar physics and observation, an active region is a temporary feature in the Sun's atmosphere characterized by a strong and complex magnetic field. They are often associated with sunspots and are commonly the source of violent eruptions such as coronal mass ejections and solar flares.[1] The number and location of active regions on the solar disk at any given time is dependent on the solar cycle.[2][3][4][5][6]
This article is missing information about scientific measurements, duration times, and sizes. (July 2021) |