Mathematics – Logic
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.1749w&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, March 1, 1988, p. 1749-1758.
Mathematics
Logic
31
Coronal Loops, Solar Maximum Mission, Solar Prominences, Stellar Mass Ejection
Scientific paper
Studies of the origins of coronal mass ejections (CMEs) show a strong association between CMEs and erupting prominences. 'Loop' CMEs form the most common morphological class for both Skylab and Solar Maximum Mission (SMM) and the class most likely to be associated with erupting prominences. In the optically thin corona, the geometry of such structures is interpreted as either planar (two-dimensional), shell-like, or bubblelike (three-dimensional) structures. Trottet and MacQueen (1980) (hereinafter referred to as TM) first examined the orientations of prominences associated with Skylab CMEs and argued that looplike CMEs were planar structures in the plane of the sky. In this work, the initial orientations of prominences identified with SMM CMEs in 1980 were measured in order to examine the overall geometry of CMEs. Contrary to TM's result, no preferred orientation for prominences associated with SMM CMEs nor any difference between that population and the population of all disk filaments were found. In addition, plots comparing CME/filament orientation angles and the angular widths of the CME envelopes show large scatter. Taken together, these results support a shell-like rather than a planar geometry for at least looplike CMEs.
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