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Manifestations of bright points observed in G-band and Ca II H by Hinode/SOT
Liu YX(刘艳霄)1,2,3; Wu, Ning4; Lin J(林隽)1,3
通讯作者Liu, Yan-Xiao(liuyanxiao@ynao.ac.cn)
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2018-10-01
卷号18期号:10页码:12
DOI10.1088/1674-4527/18/10/125
产权排序第1完成单位
收录类别SCI
关键词Sun: photosphere Sun: chromosphere methods: observational techniques: image processing
摘要An algorithm was developed for identifying and tracking a magnetic bright point, or bright point (BP) for short, observed in both the photosphere (G-band) and chromosphere (Ca II H), as well as for pairing a photospheric BP (PBP) with its conjugate chromospheric BP (CBP). Two sets of data observed by Hinode/SOT in the quiet Sun near the disk center were analyzed. About 278 PBP-CBP pairs were identified and tracked. Lifetimes of both the PBPs and CBPs follow an exponential distribution with average lifetimes of 174 s and 163 s, respectively. We found that the differences in appearance time, in disappearance time and in lifetime of the two kinds of BPs all follow Gaussian distributions,which may indicate that the mechanisms of PBP and CBP formation/disintegration are different. However, the lifetimes of PBPs and CBPs are positively correlated with one another, with a correlation coefficient of 0.8. Furthermore, we calculated the horizontal displacement between the PBP and its conjugate CBP, which follows a Gaussian function with an average and standard deviation of (67.7 +/- 38.5) km. We also calculated the amplitude of the flux tube shape change which might be caused by MHD waves propagating along the flux tube, and found that it follows an exponential distribution very well.
资助项目CAS[XDA17010507] ; CAS[XDA15010900] ; CAS[QYZDJ-SSWSLH012] ; National Basic Research Program of China (973 Program)[2013CBA01503] ; National Natural Science Foundation of China[U1631130] ; National Natural Science Foundation of China[11333007] ; National Natural Science Foundation of China[11763004] ; Project of the Group for Innovation of Yunnan Province
项目资助者CAS ; National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; Project of the Group for Innovation of Yunnan Province
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
ISSN1674-4527
URL查看原文
WOS记录号WOS:000446091900008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SOLAR OPTICAL TELESCOPE ; MAGNETIC-FLUX CONCENTRATIONS ; ALFVEN-WAVE TURBULENCE ; QUIET-SUN ; CONVECTIVE INSTABILITY ; AUTOMATED DETECTION ; INTERNETWORK AREAS ; ACTIVE-REGION ; MHD WAVES ; NETWORK
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17865
专题太阳物理研究组
通讯作者Liu YX(刘艳霄)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China
4.School of Tourism and Geography, Yunnan Normal University, Kunming 650500, China
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Liu YX,Wu, Ning,Lin J. Manifestations of bright points observed in G-band and Ca II H by Hinode/SOT[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(10):12.
APA Liu YX,Wu, Ning,&Lin J.(2018).Manifestations of bright points observed in G-band and Ca II H by Hinode/SOT.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(10),12.
MLA Liu YX,et al."Manifestations of bright points observed in G-band and Ca II H by Hinode/SOT".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.10(2018):12.
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