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POLAR BRUSH [1 record]

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Record 1 1989-02-20

English

Subject field(s)
  • The Sun (Astronomy)
CONT

When few solar spots appear, it is more oval, with long equatorial streamers and short so-called polar brushes.

French

Domaine(s)
  • Soleil (Astronomie)
DEF

Il existe des jets coronaux très fins, ayant la forme de colonnes cylindriques de 7 000 km de section, dressées à peu près verticalement au dessus de la photosphère. On les observe surtout au voisinage des pôles où on les appelle "plumes polaires". On les associe à des lignes de force ouvertes sur le milieu interplanétaire.

Spanish

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