Solfackla
De ljusare områdena i denna bild/film av solen är solfacklor.
En solfackla är ett ljusare, och därmed hetare, område på solens yta.[1][2]
Ordet solfackla kan någon gång istället avse ett starkt solutbrott, en soleruption eller en flare.
Referenser
- ^ Förklaringen till solfacklorna Arkiverad 15 oktober 2009 hämtat från the Wayback Machine.. Institutet för solfysik 2006-09-13, länkad 2008-11-30.
- ^ Göran Scharmer, Solens böljande landskap. Populär astronomi, sid 30-33, mars 2005.
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Media som används på denna webbplats
Sun920607.jpg
Solen och några solfläckar. De två små fläckarna i mitten har ungefär samma diameter som jorden.
Solen och några solfläckar. De två små fläckarna i mitten har ungefär samma diameter som jorden.
187931main Fringe081807 512FD.mov.ogv
This week STEREO observed a nice gathering of solar prominences in profile as they twisted, stretched and floated just above the solar surface. Over about two and a half days (August 16-18, 2007), the prominences were seen in extreme ultraviolet light by the Ahead spacecraft. Prominences are clouds of cooler gases controlled by powerful magnetic forces that extend above the Sun’s surface. The careful observer can sometimes see the gases arcing out from one point and sliding above the surface to another point. In the most interesting sequence near the end of the clip, the upper prominence seems to arch away into space. Such sequences serve to show the dynamic nature of the Sun.
This week STEREO observed a nice gathering of solar prominences in profile as they twisted, stretched and floated just above the solar surface. Over about two and a half days (August 16-18, 2007), the prominences were seen in extreme ultraviolet light by the Ahead spacecraft. Prominences are clouds of cooler gases controlled by powerful magnetic forces that extend above the Sun’s surface. The careful observer can sometimes see the gases arcing out from one point and sliding above the surface to another point. In the most interesting sequence near the end of the clip, the upper prominence seems to arch away into space. Such sequences serve to show the dynamic nature of the Sun.