New results on the site of initiation of Cornal Mass Ejections (CMES), and an interpretation of observation of their interaction with streamers

Details New results on the site of initiation of Cornal Mass Ejections (CMES), and an interpretation of observation of their interaction with streamers New results on the site of initiation of Cornal Mass Ejections (CMES), and an interpretation of observation of their interaction with streamers

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.conf...59e&link_type=abstract

Academy of Sciences (USSR), International Solar Wind 8 Conference, p. 59

Physics

Coronal Holes, Coronas, Solar Activity, Stellar Mass Ejection, Stellar Flares, Stellar Physics

Scientific paper

In this paper it is shown that in some months of the phase of minimum solar activity 1985-1987 as many as (80-90)% of a total number of CMEs occur near belts of streamers with neutral line (NL), and only (10-20)% of them appear near belts of streamers without NL. (Streamers without NL separate regions in the corona with the same direction of radial fields of magnetic tubes originating from adjacent coronal holes). With increasing solar activity, the center of gravity of the number of emerging CMEs is shifting toward belts of steamers without NL and reaches over 80% of their total number in some months by the end of 1989. The CME position angle (PA) coincides, on average, with the angle of the portion of NL which straddles the CME. It is quite possible that this condition is satisfied not in the average but rigorously for each CME. The streamer observed on the limb does not disrupt if the CME in transit either only slightly overlaps with the streamer or lies at all outside it. If in the limb plane under consideration the steamer lies inside the CME, then it disrupts after CME passage.

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