Evolution of Vertical Electric Currents and Flares in An Active Region

Evolution of Vertical Electric Currents and Flares in An Active Region

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摘要 In this paper, solar active region (AR) 6891 is studied. The long term temporal (over a 8 day period) relationahip between vertical current evolution and flare are examined. We found that the day to day variation of the flare number in the active region is more closly associated with the variation of net current intensity than that of total current intensity. The increase in negative current in the weak following polarity area is due to the reduction in negative current in the strong preceding area. In this paper, solar active region (AR) 6891 is studied. The long term temporal (over a 8 day period) relationahip between vertical current evolution and flare are examined. We found that the day to day variation of the flare number in the active region is more closly associated with the variation of net current intensity than that of total current intensity. The increase in negative current in the weak following polarity area is due to the reduction in negative current in the strong preceding area.

作者 Li Wei 1, 2 , Ai Guoxiang 1, 2 1 (Beijing Astronomical Observatory, The Chinese Academy of Sciences, Beijing 100012, China) 2 (National Astronomical Observatories, The Chinese Academy of Sciences, Beijing 100012, China)

出处《天文研究与技术》 CSCD 1999年第S1期419-423,共5页 Astronomical Research & Technology

关键词 in An Active Region Evolution of Vertical Electric Currents and Flares

分类号 P182.9 [天文地球—天文学]

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天文研究与技术

1999年第S1期

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Evolution of Vertical Electric Currents and Flares in An Active Region

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