Analysis of the geometrical features of Photospheric Bright Points in the quiet-sun region

	Analysis of the geometrical features of Photospheric Bright Points in the quiet-sun region
	Yu, Lan 1,2; Deng LH(邓林华)3,4 ; Feng, Song 5
	2013
会议名称	32nd Chinese Control Conference, CCC 2013
会议日期	2013-07-26
会议地点	Xi'an, China
关键词	Photospheric Bright Points Laplacian morphological dilation eccentricity Sun
页码	4491-4495
通讯作者	Yu, L, Yunnan Land & Resources Vocat Coll, Dept Informat Engn, Kunming 650217, Peoples R China
英文摘要	The Solar Granulation is an ubiquitous structure in the quiet photosphere. Many brighter features called 'Photospheric Bright Points (PBPs)' are found within inter-granules in G-band images observed. They are the small-scale feature on the solar surface. Studying their characteristics may reveal the significant problems such as coronal hearting, local dynamo theory and the relation of magnetic field. In the presented paper, we utilized Laplacian and morphological dilation (LMD) technique to detect and extract PBPs within inter-granular lanes. A data set has been taken with the Dutch Open Telescope (DOT) on July 2, 2006. It was employed to analyze the geometrical feature of PBPs. Two statistical distributions of PBPs were obtained by the proposed algorithm. The diameter distribution of PBPs is consistent with lognormal statistics. The peak diameter occurs at about 230km. The histogram of geometrical features is derived from the PBPs extracted. The distribution of eccentricity indicates that approximately 50% PBPs have a near circular, the average eccentricity occurs at 1.5. Their distribution accords with an Exponential fit.
收录类别	EI ; CPCI
产权排序	第3完成单位
会议网址	http://ieeexplore.ieee.org/document/6640211/
会议录	Proceedings of the 32nd Chinese Control Conference, CCC 2013
会议录出版者	IEEE Computer Society
会议录出版地	345 E 47TH ST, NEW YORK, NY 10017 USA
学科主题	Automation & Control Systems
语种	英语
ISSN号	2161-2927
ISBN号	9789881563835
WOS记录号	WOS:000393046004122
研究领域[WOS]	Automation & Control Systems
内容类型	会议论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4863]
专题	云南天文台_抚仙湖太阳观测站
作者单位	1.Department of Information Engineering, Yunnan Land and Resources Vocation College, Kunming 650217, China 2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, China 3.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 4.Graduate University of Chinese Academy of Sciences, Beijing, 100049, China 5.Computer Technology Application Key Lab of Yunnan Province, Kunming University of Science and Technology, 650500, China
推荐引用方式 GB/T 7714	Yu, Lan,Deng LH,Feng, Song. Analysis of the geometrical features of Photospheric Bright Points in the quiet-sun region[C]. 见:32nd Chinese Control Conference, CCC 2013. Xi'an, China. 2013-07-26.http://ieeexplore.ieee.org/document/6640211/.