polar crown

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Term: polar crown
Definition:

A nearly continuous ring of filaments occasionally encircling either polar region of the Sun (latitudes higher than 50’).
NOAA SWPC SpWx Glossary Planetary Astrophysics Heliophysics
Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
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https://n2t.net/ark:/99152/h9954