A STATISTICAL STUDY OF FLARE PRODUCTIVITY ASSOCIATED WITH SUNSPOT PROPERTIES IN DIFFERENT MAGNETIC TYPES OF ACTIVE REGIONS

摘要: It is often believed that intense flares preferentially originate from the large-size active regions (ARs) with strong magnetic fields and complex configurations. This work investigates dependence of flare activity on AR properties clarifies influence parameters productivity, based two data sets daily sunspot information as well GOES soft X-ray measurements HMI vector magnetograms. By considering evolution complexity, we find behaviors are quite different in short- long-lived ARs more configurations likely to host impulsive flares. Furthermore, investigate several quantities perform two-sample Kolmogorov–Smirnov test examine similarity/difference between populations types ARs. Our results demonstrate total source field strength photosphere has a good correlation noted tend occur at combination an intermediate field-weighted shear angle. result implies free energy provided by could be high enough trigger eruption even moderate photosphere. We thus suggest represented rather than photospheric complexity better quantity characterize productivity AR, especially for occurrence