STATISTICAL STUDY OF FREE MAGNETIC ENERGY AND FLARE PRODUCTIVITY OF SOLAR ACTIVE REGIONS

	STATISTICAL STUDY OF FREE MAGNETIC ENERGY AND FLARE PRODUCTIVITY OF SOLAR ACTIVE REGIONS
	Su, J. T.; Jing, J.; Wang, S.; Wiegelmann, T.; Wang, H. M.
刊名	ASTROPHYSICAL JOURNAL
	2014
卷号	788 期号:2 页码:150
关键词	Sun: activity Sun: flares Sun: magnetic fields
ISSN号	0004-637X
通讯作者	Su, JT (reprint author), New Jersey Inst Technol, Space Weather Res Lab, Newark, NJ 07102 USA.
英文摘要	Photospheric vector magnetograms from the Helioseismic and Magnetic Imager on board the Solar Dynamic Observatory are utilized as the boundary conditions to extrapolate both nonlinear force-free and potential magnetic fields in solar corona. Based on the extrapolations, we are able to determine the free magnetic energy (FME) stored in active regions (ARs). Over 3000 vector magnetograms in 61 ARs were analyzed. We compare FME with the ARs' flare index (FI) and find that there is a weak correlation (< 60%) between FME and FI. FME shows slightly improved flare predictability relative to the total unsigned magnetic flux of ARs in the following two aspects: (1) the flare productivity predicted by FME is higher than that predicted by magnetic flux and (2) the correlation between FI and FME is higher than that between FI and magnetic flux. However, this improvement is not significant enough to make a substantial difference in time-accumulated FI, rather than individual flare, predictions.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4474]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Su, J. T.,Jing, J.,Wang, S.,et al. STATISTICAL STUDY OF FREE MAGNETIC ENERGY AND FLARE PRODUCTIVITY OF SOLAR ACTIVE REGIONS[J]. ASTROPHYSICAL JOURNAL,2014,788(2):150.
APA	Su, J. T.,Jing, J.,Wang, S.,Wiegelmann, T.,&Wang, H. M..(2014).STATISTICAL STUDY OF FREE MAGNETIC ENERGY AND FLARE PRODUCTIVITY OF SOLAR ACTIVE REGIONS.ASTROPHYSICAL JOURNAL,788(2),150.
MLA	Su, J. T.,et al."STATISTICAL STUDY OF FREE MAGNETIC ENERGY AND FLARE PRODUCTIVITY OF SOLAR ACTIVE REGIONS".ASTROPHYSICAL JOURNAL 788.2(2014):150.