Coronal Manifestations of Eruptive Prominences - Theory

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Abstract
Of all observable solar phenomena, the eruption of prominences is perhaps the most spectacular. These interesting structures may remain quiescent for months and then, for some unknown reason, suddenly rise and leave the Sun at considerable speeds. The physical structure of quiescent prominences is complex. They appear, in Hα, to consist of fine vertical threads of cool dense material suspended at some height above the photosphere surrounded by the hot tenuous corona. They are definitely related to the coronal magnetic field configuration since they are always situated in the vicinity of a neutral line in the line of sight magnetic field.