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PROMINENCE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-07-17

English

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

Think of the Sun as a highly magnetic ball of gas. Following along magnetic field lines, giant loops of plasma can form that extend far outward into space from the Sun's glowing "surface," its photosphere. These loops of plasma are solar prominences, and they can measure many times larger than Earth's diameter.

French

Domaine(s)
  • Soleil (Astronomie)
DEF

Structure de plasma fine et allongée, ancrée dans la photosphère solaire et s'étirant dans la couronne, qui est observée comme une forme brillante sur le fond du ciel.

OBS

Les protubérances solaires et les filaments solaires correspondent au même phénomène physique, et ne diffèrent que par le fond sur lequel ils sont observés.

OBS

On distingue les protubérances quiescentes, actives et éruptives.

OBS

proéminence solaire; protubérance : termes et définition publiés au Journal officiel de la République française le 28 juin 2017.

Spanish

Campo(s) temático(s)
  • Sol (Astronomía)
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Record 2 1990-12-28

English

Subject field(s)
  • Astrophysics and Cosmography
CONT

Most prominences are of the active type; they originate high above the chromosphere and pour their streamers down into it. Quiescent prominences are the least active and have the longest lives; their most common form is the "haystack". Eruptive prominences are among the rarer types. These rise from material above the chromosphere, attaining high speeds and great altitudes before they vanish.

CONT

Bright rose-coloured prominences were sometimes seen extending above the edge of the moon's disk and into the corona.

French

Domaine(s)
  • Astrophysique et cosmographie
DEF

Partie visible d'un jet de gaz au-dessus de la photosphère.

CONT

Les protubérances peuvent se ranger en 2 grandes catégories : les protubérances quiescents, s'étendant comme d'immenses nuages, volutes etc., et les protubérances éruptives, dont les jets lumineux s'élèvent parfois à plus de 1 million de kilomètres de hauteur.

CONT

Comme la chromosphère, les protubérances peuvent être observées régulièrement en dehors des éclipses totales à l'aide du spectroscope.

Spanish

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