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Investigation of intergranular bright points from the New Vacuum Solar Telescope
Ji, Kai-Fan1; Xiong, Jian-Ping1,2,3; Xiang YY(向永源)4; Feng, Song1,2,3; Deng, Hui1; Wang F(王锋)1,4; Yang, Yun-Fei1,2,3
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2016-05-01
Volume16Issue:5
DOI10.1088/1674-4527/16/5/078
Contribution Rank第4完成单位
Indexed BySCI
KeywordTechniques: Image Processing Sun: Photosphere Methods: Data Analysis Methods: Statistical
Abstract

Six high-resolution TiO-band image sequences from the New Vacuum Solar Telescope (NVST) are used to investigate the properties of intergranular bright points (igBPs). We detect the igBPs using a Laplacian and morphological dilation algorithm (LMD) and automatically track them using a threedimensional segmentation algorithm, and then investigate the morphologic, photometric and dynamic properties of igBPs in terms of equivalent diameter, intensity contrast, lifetime, horizontal velocity, diffusion index, motion range and motion type. The statistical results confirm previous studies based on G-band or TiO-band igBPs from other telescopes. These results illustrate that TiO data from the NVST are stable and reliable, and are suitable for studying igBPs. In addition, our method is feasible for detecting and tracking igBPs with TiO data from the NVST. With the aid of vector magnetograms obtained from the Solar Dynamics Observatory/Helioseismic and Magnetic Imager, the properties of igBPs are found to be strongly influenced by their embeddedmagnetic environments. The areal coverage, size and intensity contrast values of igBPs are generally larger in regions with higher magnetic flux. However, the dynamics of igBPs, including the horizontal velocity, diffusion index, ratio of motion range and index of motion type are generally larger in the regions with lower magnetic flux. This suggests that the absence of strong magnetic fields in the medium makes it possible for the igBPs to look smaller and weaker, diffuse faster, and move faster and further along a straighter path.

Funding ProjectNational Natural Science Foundation of China[11573012] ; National Natural Science Foundation of China[11303011] ; National Natural Science Foundation of China[11263004] ; National Natural Science Foundation of China[11163004] ; National Natural Science Foundation of China[U1231205] ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences[KLSA201414] ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences[KLSA201505]
Funding OrganizationNational Natural Science Foundation of China[11573012, 11303011, 11263004, 11163004, U1231205] ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences[KLSA201414, KLSA201505]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS IDWOS:000375793000009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordG-BAND BRIGHT ; MAGNETIC-FIELD STRENGTHS ; UV IRRADIANCE VARIATIONS ; ACTIVE-REGION ; QUIET SUN ; FLUX TUBES ; INTERNETWORK AREAS ; DYNAMICS ; ATMOSPHERE ; PHOTOSPHERE
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9591
Collection抚仙湖太阳观测站
Corresponding AuthorYang, Yun-Fei
Affiliation1.Faculty of Information Engineering and Automation/Yunnan Key Laboratory of Computer Technology Application, Kunming University of Science and Technology, Kunming 650500, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
3.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210093, China
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
Recommended Citation
GB/T 7714
Ji, Kai-Fan,Xiong, Jian-Ping,Xiang YY,et al. Investigation of intergranular bright points from the New Vacuum Solar Telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(5).
APA Ji, Kai-Fan.,Xiong, Jian-Ping.,Xiang YY.,Feng, Song.,Deng, Hui.,...&Yang, Yun-Fei.(2016).Investigation of intergranular bright points from the New Vacuum Solar Telescope.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(5).
MLA Ji, Kai-Fan,et al."Investigation of intergranular bright points from the New Vacuum Solar Telescope".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.5(2016).
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