AbstractWe report the statistical properties of narrow coronal mass ejections (CMEs, angular width < 20°) withparticular emphasis on comparison with normal CMEs. We investigated 806 narrow CMEs from an online LASCO/CME catalog and found that (1) the fraction of narrow CMEs increases from 12% to 22% towards solar maximum, (2) during the solar maximum, the narrow CMEs are generally faster than normal ones, (3) the maximum speed of narrow CMEs (1141 km s−1) is much smaller than that of the normal CMEs (2604 km s−1). These results imply that narrow CMEs do not form a subset of normal CMEs and have a different acceleration mechanism from normal CMEs.
Properties of narrow coronal massejections observed with LASCO
Advances in Space Research ; 32 , 12 ; 2631-2635
2003-03-10
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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