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Hemispheric variation of coronal mass ejections in cycle 23

Gao, Peng-Xin; Li, Ke-Jun; Shi, Xiang-Jun

In this paper, we analyse the behaviour of the activity of coronal mass ejection (CME) observed by the Large Angle and Spectrometric Coronagraph Experiment on board the Solar and Heliospheric Observatory (SOHO/LASCO) in cycle 23 from 1997 to 2007 separately for the Northern and Southern hemispheres. The results show the following. (1) At all and l…

Kinetic properties of coronal mass ejections corrected for the projection effect in Cycle 23

Gao, Peng-Xin; Li, Ke-Jun; Li, Qi-Xiu

Using Howard et al.'s method, we investigate, before and after the projection correction, the speed and acceleration distributions for 1747 coronal mass ejections (CMEs) associated solely with flares (FL CMEs) and 631 CMEs associated solely with filament eruptions (FE CMEs) observed by the Large Angle and Spectrometric Coronagraph on board the Sol…