Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...73..133j&link_type=abstract
Solar Physics, vol. 73, Sept. 1981, p. 133-144.
Astronomy and Astrophysics
Astronomy
27
Solar Corona, Solar Flares, Stellar Mass Ejection, Coronagraphs, Electron Density (Concentration), H Alpha Line, Limb Brightening, Skylab Program, Spaceborne Astronomy
Scientific paper
Coronal ejection transients viewed with the white light coronagraph on Skylab are studied from the times of their very earliest manifestations for clues to their origin. Excess coronal mass with a configuration like that of the eventual transient is seen in twelve events prior to the transient's associated near-surface H-alpha eruption or flare. In seven of the events, data are adequate to observe the rates of outward mass motion of coronal material prior to their surface manifestations. The observations place severe constraints on different solar mass ejection mechanisms because they spread the process responsible for the ejection over a larger region of the corona and over a longer period of time than normally considered. The observations suggest the corona is an active participant in the ejection that begins with the acceleration of the outer portion of a preexisting structure and ends with the obvious surface manifestation.
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