Prominences / Filaments





 Prominences are clouds of material suspended above the chromosphere by magnetic field loops. When seen against the chromosphere, they are visible by absorption and are called filaments. When seen near the limb, they can be seen against the sky as emission features. They generally come in two broad classes: active and quiescent. Quiescent prominences occur away from active regions and last for many months. Active prominences are associated with sunspots and flares. They have violent motions, change fast and last for only a few hours.