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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
Source PublicationASTROPHYSICAL JOURNAL
2017-12-10
Volume851Issue:1
DOI10.3847/1538-4357/aa9a44
Contribution Rank第3完成单位
Indexed BySCI
KeywordMethods: Data Analysis Methods: Statistical Sun: Chromosphere Sun: Magnetic Fields Sun: Photosphere
Abstract

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.

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[11763004, 11573012, 11303011, 11463003, U1531132] ; Open Research Program of the Key Laboratory of Solar Activity of the Chinese Academy of Sciences[KLSA201604]
Language英语
Subject Area天文学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000417808300002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordQUIET SUN ; OPTICAL TELESCOPE ; ACTIVE-REGION ; FIELDS ; SIZE ; PHOTOSPHERE ; DYNAMICS ; NETWORK ; MOTIONS ; CHROMOSPHERE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12090
Collection抚仙湖太阳观测站
Corresponding AuthorYang, Yunfei
Affiliation1.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
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).
APA Xiong, Jianping.,Yang, Yunfei.,Jin, Chunlan.,Ji KF.,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).
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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