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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 KF(季凯帆)3; Feng, Song1,2; Wang F(王锋)1,3; Deng, Hui1; Hu, Yu1; Yang, Yunfei(Kunming Univ Sci & Technol, Fac Informat Engn & Automat, Yunnan Key Lab Comp Technol Applicat, Kunming 650500, Yunnan, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-12-10
卷号851期号:1
DOI10.3847/1538-4357/aa9a44
产权排序第3完成单位
收录类别SCI
关键词Methods: Data Analysis Methods: Statistical Sun: Chromosphere Sun: Magnetic Fields Sun: Photosphere
摘要Photospheric 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.
项目资助者National Natural Science Foundation of China(11763004, 11573012, 11303011, 11463003, U1531132) ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences(KLSA201604)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000417808300002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]QUIET SUN ; OPTICAL TELESCOPE ; ACTIVE-REGION ; FIELDS ; SIZE ; PHOTOSPHERE ; DYNAMICS ; NETWORK ; MOTIONS ; CHROMOSPHERE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12090
专题抚仙湖太阳观测站
通讯作者Yang, Yunfei(Kunming Univ Sci & Technol, Fac Informat Engn & Automat, Yunnan Key Lab Comp Technol Applicat, Kunming 650500, Yunnan, Peoples R China)
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, Yunnan, China
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, China
3.Yunnan Observatory, Chinese Academy of Sciences, Yunnan 650011, China
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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).
APA Xiong, Jianping.,Yang, Yunfei.,Jin, Chunlan.,Ji KF.,Feng, Song.,...&Yang, Yunfei.(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).
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).
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