Flare-production potential associated with different sunspot groups
Flare-production potential associated with different sunspot groups
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DOI：
10.1093/mnras/stw2742
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发表时间：
2017-02
影响因子：
4.8
通讯作者：
S. Eren;A. Kilçik;T. Atay;R. Miteva;V. Yurchyshyn;J. Rozelot;A. Özgüç
中科院分区：
文献类型：
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作者：
S. Eren;A. Kilçik;T. Atay;R. Miteva;V. Yurchyshyn;J. Rozelot;A. Özgüç
In this study, we analyzed different types (C, M, and X classes) of X-Ray solar flares occurring in sunspot groups. The data cover 1996 - 2014 time interval, and a total of 4262 active regions (ARs) were included in the data set. We defined the solar flare production potential as the ratio of the total number of flares observed in a sunspot group to the total number of the same class sunspot groups. Our main findings are as follows: 1) Large and complex sunspot groups (D+E+F) have the flare production potential about 8 times higher than the small and simple (A+B+C+H) ARs. 2) 79% of all flares were produced by the large and complex sunspot groups, while only 21% of flares were produced by the small groups. 3) The largest and the most complex F class (very large and very complex) sunspot groups exhibit the highest flare production potential (2.16 flare per sunspot group), while the smallest and the least complex A class sunspot groups show the lowest (0.05 flare per group) flare production potential. 4. Temporal variation of SSCs, SSGAs and the total number of flares (including C flares) showed similar time profiles during both cycles with multiple peaks. 5) The mean area of ARs very well describes the flare production potential of each group with the regression coefficient ofR2=0.99. Most of these sunspot groups (> 70%) are, according to the Zurich Classification, complex ARs.
