【摘 要】
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Many previous studies have suggested that the magnetic field as well as sunspot structure present rapid and irreversible changes associated with solar flares.In this paper we first use five X-ray flar
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Many previous studies have suggested that the magnetic field as well as sunspot structure present rapid and irreversible changes associated with solar flares.In this paper we first use five X-ray flares observed by HMI/SDO to show that not only the magnetic fields and sunspot structures do show rapid,irreversible changes but also these changes are closely related,both spatially and temporally.The magnitudes of the correlation coefficients between the temporal variations of horizontal magnetic field and sunspot intensity are all larger than 0.90,with a maximum value of 0.99 and an average value of 0.96.
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