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The Characteristics of Thin Magnetic Flux Tubes in the Lower Solar Atmosphere Observed by Hinode/SOT in the G band and in Ca II H Bright Points
Xiong, Jianping1; Yang, Yunfei1,2; Jin, Chunlan2; Ji, Kaifan3; Feng, Song1,2; Wang, Feng1,3; Deng, Hui1; Hu, Yu1
2017-12-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume851Issue:1Pages:17
AbstractPhotospheric bright points (PBPs) and chromospheric bright points (CBPs) reflect the cross sections of magnetic flux tubes at different heights of the lower solar atmosphere. We aim to study the fine 3D structures and transportation dynamics of the magnetic flux tubes using G-band and simultaneous Ca II H image-series from the Solar Optical Telescope (SOT) on board Hinode. A 3D track-while-detect method is proposed to detect and track PBPs and CBPs. The mean values of equivalent diameters, maximum intensity contrasts, transverse velocities, motion ranges, motion types, and diffusion indices of PBPs and CBPs are 180 +/- 20 and 210 +/- 30 km, 1.0 +/- 0.1 < IQS-G > and 1.2 +/- 0.1 < IQS-Ca >, 1.6 +/- 0.8 and 2.7 +/- 1.4 km s(-1), 1.5 +/- 0.6 and 1.7 +/- 0.8, 0.8 +/- 0.2 and 0.6 +/- 0.2, and 1.7 +/- 0.7 and 1.3 +/- 0.7, respectively. Moreover, the ratios of each CBP characteristics to its corresponding PBP are derived to explore the change rates of the flux tubes. The corresponding ratios are 1.2 +/- 0.2, 1.2 +/- 0.1, 1.9 +/- 0.1, 1.4 +/- 0.3, 0.7 +/- 0.2, and 0.9 +/- 0.4, respectively. The statistical results imply that the majority magnetic flux tubes expand slightly with increasing solar height, look brighter than their surroundings, show a higher transverse velocity, a wider motion range, and a more erratic path, but the majority of the flux tubes diffuse slightly slower. The phenomenon might be explained by the conservation of momentum combined with a decrease in density. The more erratic path leads to a swing or twist of the flux tubes and therefore guides magnetohydrodynamic waves.
Keywordmethods: data analysis methods: statistical Sun: chromosphere Sun: magnetic fields Sun: photosphere
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences
DOI10.3847/1538-4357/aa9a44
WOS KeywordQUIET SUN ; OPTICAL TELESCOPE ; ACTIVE-REGION ; FIELDS ; SIZE ; PHOTOSPHERE ; DYNAMICS ; NETWORK ; MOTIONS ; CHROMOSPHERE
Language英语
Funding ProjectNational Natural Science Foundation of China[11763004] ; National Natural Science Foundation of China[11573012] ; National Natural Science Foundation of China[11303011] ; National Natural Science Foundation of China[11463003] ; National Natural Science Foundation of China[U1531132] ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences[KLSA201604]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000417808300002
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37354
Collection中国科学院国家天文台
Corresponding AuthorYang, Yunfei
Affiliation1.Kunming Univ Sci & Technol, Fac Informat Engn & Automat, Yunnan Key Lab Comp Technol Applicat, Kunming 650500, Yunnan, Peoples R China
2.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Xiong, Jianping,Yang, Yunfei,Jin, Chunlan,et al. The Characteristics of Thin Magnetic Flux Tubes in the Lower Solar Atmosphere Observed by Hinode/SOT in the G band and in Ca II H Bright Points[J]. ASTROPHYSICAL JOURNAL,2017,851(1):17.
APA Xiong, Jianping.,Yang, Yunfei.,Jin, Chunlan.,Ji, Kaifan.,Feng, Song.,...&Hu, Yu.(2017).The Characteristics of Thin Magnetic Flux Tubes in the Lower Solar Atmosphere Observed by Hinode/SOT in the G band and in Ca II H Bright Points.ASTROPHYSICAL JOURNAL,851(1),17.
MLA Xiong, Jianping,et al."The Characteristics of Thin Magnetic Flux Tubes in the Lower Solar Atmosphere Observed by Hinode/SOT in the G band and in Ca II H Bright Points".ASTROPHYSICAL JOURNAL 851.1(2017):17.
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