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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; Yang, YF
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2016-05-01
卷号16期号:5
DOI10.1088/1674-4527/16/5/078
产权排序第4完成单位
收录类别SCI
关键词Techniques: Image Processing Sun: Photosphere Methods: Data Analysis Methods: Statistical
摘要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.
项目资助者National 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)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000375793000009
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]G-BAND BRIGHT ; MAGNETIC-FIELD STRENGTHS ; UV IRRADIANCE VARIATIONS ; ACTIVE-REGION ; QUIET SUN ; FLUX TUBES ; INTERNETWORK AREAS ; DYNAMICS ; ATMOSPHERE ; PHOTOSPHERE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9591
专题抚仙湖太阳观测站
通讯作者Yang, YF
作者单位1.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
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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, YF.(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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