Distributions of Energy and Mass of Coronal Mass Ejections |
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| Authors: | P X Gao K J Li J C Xu |
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| Institution: | 1.National Astronomical Observatories/Yunnan Observatory,Chinese Academy of Sciences,Kunming,China;2.Key Laboratory of Solar Activity, National Astronomical Observatories,Chinese Academy of Sciences,Beijing,China;3.Graduate University of Chinese Academy of Sciences,Beijing,China |
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| Abstract: | The present study investigates the energy and mass distributions of all (11 322) coronal mass ejections (CMEs), 1406 CMEs
associated solely with flares (FL CMEs), and 325 CMEs associated solely with filament eruptions (FE CMEs), all of which were
observed by the Large Angle and Spectrometric Coronagraph on board the Solar and Heliospheric Observatory (SOHO/LASCO) from January 1996 to December 2009. The results show the following. i) The mean energy of FL CMEs is significantly lower than that of all CMEs. The mean energy of FE CMEs is significantly higher
than those of FL CMEs and all CMEs. ii) The mean mass of FL CMEs is slightly larger than that of all CMEs. The mean mass of FE CMEs is significantly larger than
those of FL CMEs and all CMEs. Our results suggest that CMEs should shed excess helicity stored in the corona and that the
magnetic complexity determines the likelihood of CMEs. |
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