Mathematics – Logic
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997acasn..38..257s&link_type=abstract
Acta Astronomica Sinica, vol. 38, p. 257
Mathematics
Logic
5
Solar Flares, Solar Magnetic Field, Magnetic Field Configurations, Sunspots, Ribbons
Scientific paper
We describe the magnetic configurations of a group of two-ribbon flares in NOAA 6233 and their temporally correlated one-ribbon flares in NOAA 6240, and also the topological connectivity between the two active regions. The analyses show that the three one-ribbon flares took place in a unipolar flux region of positive polarity, which seems to be connected through a set of high-lying magnetic loops with the strong delta-sunspot, where the corresponding two-ribbon flares appeared. The interaction between the high-lying magnetic loops and the low-lying sheared magnetic loops in the delta-sunspot appears to be the primary cause for the two-ribbon flares. The accelerated electrons in the primary energy release may propagate along the high-lying magnetic loops (or the relevant separatrices), and result in the one-ribbon flares in NOAA 6240. Therefore, we suggest that these one-ribbon flares are the sympathetic flares of the correlated two-ribbon flares in NOAA 6233.
Luan D.
Shi Zhong-Xian
Wang Jing-Xiu
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