Deep Learning for Automatic Recognition of Magnetic Type in Sunspot Groups

doi:10.1155/2019/9196234

	Deep Learning for Automatic Recognition of Magnetic Type in Sunspot Groups
	Fang, Yuanhui; Cui, Yanmei; Ao, Xianzhi
刊名	ADVANCES IN ASTRONOMY
	2019
卷号	2019 页码:9196234
ISSN号	1687-7969
DOI	10.1155/2019/9196234
英文摘要	Sunspots are darker areas on the Sun's photosphere and most of solar eruptions occur in complex sunspot groups. The Mount Wilson classification scheme describes the spatial distribution of magnetic polarities in sunspot groups, which plays an important role in forecasting solar flares. With the rapid accumulation of solar observation data, automatic recognition of magnetic type in sunspot groups is imperative for prompt solar eruption forecast. We present in this study, based on the SDO/HMI SHARP data taken during the time interval 2010-2017, an automatic procedure for the recognition of the predefined magnetic types in sunspot groups utilizing a convolutional neural network (CNN) method. Three different models (A, B, and C) take magnetograms, continuum images, and the two-channel pictures as input, respectively. The results show that CNN has a productive performance in identification of the magnetic types in solar active regions (ARs). The best recognition result emerges when continuum images are used as input data solely, and the total accuracy exceeds 95%, for which the recognition accuracy of Alpha type reaches 98% while the accuracy for Beta type is slightly lower but maintains above 88%.
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/7245]
专题	国家空间科学中心_空间环境部
推荐引用方式 GB/T 7714	Fang, Yuanhui,Cui, Yanmei,Ao, Xianzhi. Deep Learning for Automatic Recognition of Magnetic Type in Sunspot Groups[J]. ADVANCES IN ASTRONOMY,2019,2019:9196234.
APA	Fang, Yuanhui,Cui, Yanmei,&Ao, Xianzhi.(2019).Deep Learning for Automatic Recognition of Magnetic Type in Sunspot Groups.ADVANCES IN ASTRONOMY,2019,9196234.
MLA	Fang, Yuanhui,et al."Deep Learning for Automatic Recognition of Magnetic Type in Sunspot Groups".ADVANCES IN ASTRONOMY 2019(2019):9196234.