中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Studies of Isolated and Non-isolated Photospheric Bright Points in an Active Region Observed by the New Vacuum Solar Telescope

文献类型:期刊论文

作者Liu YX(刘艳宵)1,2,3; Xiang YY(向永源)1,3; Erdelyi, Robertus4,5; Liu Z(刘忠)1,3; Li, Dong6,7; Ning, Zongjun6,7; Bi Y(毕以)1,2,3; Wu, Ning8; Lin J(林隽)1,3
刊名ASTROPHYSICAL JOURNAL
出版日期2018-03-20
卷号856期号:1
关键词Instrumentation: High Angular Resolution Methods: Observational Sun: Photosphere
ISSN号0004-637X
DOI10.3847/1538-4357/aab150
产权排序第1完成单位
文献子类Article
英文摘要

Properties of photospheric bright points (BPs) near an active region have been studied in TiO lambda 7058 angstrom images observed by the New Vacuum Solar Telescope of the Yunnan Observatories. We developed a novel recognition method that was used to identify and track 2010 BPs. The observed evolving BPs are classified into isolated (individual) and non-isolated (where multiple BPs are observed to display splitting and merging behaviors) sets. About 35.1% of BPs are non-isolated. For both isolated and non-isolated BPs, the brightness varies from 0.8 to. 1.3 times the average background intensity and follows a Gaussian distribution. The lifetimes of BPs follow a lognormal distribution, with characteristic lifetimes of (267 +/- 140). s and (421 +/- 255). s, respectively. Their size also follows log-normal distribution, with an average size of about (2.15 +/- 0.74). x. 10(4) km(2) and (3.00 +/- 1.31). x 10(4) km(2) for area, and (163 +/- 27) km and (191 +/- 40) km for diameter, respectively. Our results indicate that regions with strong background magnetic field have higher BP number density and higher BP area coverage than regions with weak background field. Apparently, the brightness/size of BPs does not depend on the background field. Lifetimes in regions with strong background magnetic field are shorter than those in regions with weak background field, on average.

学科主题天文学 ; 太阳与太阳系 ; 太阳物理学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词G-BAND BRIGHT ; MAGNETIC-FLUX TUBES ; QUIET SUN ; HIGH-RESOLUTION ; CONVECTIVE INSTABILITY ; RADIATIVE PROPERTIES ; PATTERN-RECOGNITION ; SPECKLE-MASKING ; FACULAE ; SIZE
资助项目Program 973[2013CBA01503] ; NSFC[U1631130] ; NSFC[11333007] ; NSFC[11763004] ; NSFC[11763004] ; CAS[QYZDJ-SSW-SLH012] ; CAS[XDA15010900] ; Group for Innovation of Yunnan Province ; STFC (UK) ; Royal Society ; Chinese Academy of Sciences President's International Fellowship Initiative([2016VMA045]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000428455800003
出版者IOP PUBLISHING LTD
资助机构Program 973[2013CBA01503] ; NSFC[U1631130, 11333007, 11763004, 11633008] ; CAS[QYZDJ-SSW-SLH012, XDA15010900] ; Group for Innovation of Yunnan Province ; STFC (UK) ; Royal Society ; Chinese Academy of Sciences President's International Fellowship Initiative([2016VMA045]
源URL[http://ir.ynao.ac.cn/handle/114a53/12300]  
专题云南天文台_太阳物理研究组
云南天文台_抚仙湖太阳观测站
通讯作者Lin J(林隽)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650216, People's Republic of China
2.University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China
4.Solar Physics and Space Plasma Research Centre (SP2RC), School of Mathematics and Statistics, The University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK
5.Department of Astronomy, Eötvös University, Pázmány P. sétány 1/A Budapest P.O. Box 32, H-1117, Hungary
6.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, People's Republic of China
7.Key Laboratory of Dark Matter and Space Science, Chinese Academy of Science, Nanjing, Jiangsu 210008, People's Republic of China
8.School of Tourism and Geography, Yunnan Normal University, Kunming, Yunnan 650500, People's Republic of China
推荐引用方式
GB/T 7714
Liu YX,Xiang YY,Erdelyi, Robertus,et al. Studies of Isolated and Non-isolated Photospheric Bright Points in an Active Region Observed by the New Vacuum Solar Telescope[J]. ASTROPHYSICAL JOURNAL,2018,856(1).
APA Liu YX.,Xiang YY.,Erdelyi, Robertus.,Liu Z.,Li, Dong.,...&Lin J.(2018).Studies of Isolated and Non-isolated Photospheric Bright Points in an Active Region Observed by the New Vacuum Solar Telescope.ASTROPHYSICAL JOURNAL,856(1).
MLA Liu YX,et al."Studies of Isolated and Non-isolated Photospheric Bright Points in an Active Region Observed by the New Vacuum Solar Telescope".ASTROPHYSICAL JOURNAL 856.1(2018).

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来源:云南天文台

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