Coronal mass-ejections-kinematics of the 19 December 1973 event

Physics

Scientific paper

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Solar Corona, Solar Prominences, Spectroheliographs, Stellar Mass Ejection, Dynamic Models, Far Ultraviolet Radiation, Plasma Density, Plasma Temperature, Skylab Program, Solar Activity Effects, Solar Magnetic Field, Solar Physics

Scientific paper

A detailed description of the observed kinematics of the coronal disturbance of December 19, 1973, is presented along with inferences about the temperatures, densities, magnetic fields, and electric currents within the event. This disturbance consisted of the eruption of a previously quiescent prominence, an associated ejection of coronal material, and the destruction of a large coronal streamer. Observations of the prominence and the corona with a scanning spectroheliometer and a white-light coronagraph aboard Skylab before, during, and after the prominence eruption are discussed, and the temperature and density in the eruptive prominence are traced as the prominence rose to a height of 3 solar radii over 7 hr. The results obtained are shown to reinforce previous arguments that the material comprising the bulk of the mass ejected from the corona in transient events arises from the low corona rather than from the eruptive prominence, which may accompany the coronal mass ejection.

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