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.


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    Titel :

    Properties of narrow coronal massejections observed with LASCO


    Beteiligte:
    Yashiro, S. (Autor:in) / Gopalswamy, N. (Autor:in) / Michalek, G. (Autor:in) / Howard, R.A. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 32 , 12 ; 2631-2635


    Erscheinungsdatum :

    2003-03-10


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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