Frequently Occurring Reconnection Jets from Sunspot Light Bridges
文献类型:期刊论文
作者 | Tian, Hui1; Yurchyshyn, Vasyl2,3; Peter, Hardi4; Solanki, Sami K.4,5; Young, Peter R.6,7,8; Ni L(倪蕾)9; Cao, Wenda2; Ji KF(季凯帆)9; Zhu, Yingjie1; Zhang, Jingwen1 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2018-02-20 |
卷号 | 854期号:2 |
ISSN号 | 0004-637X |
关键词 | Magnetic Reconnection Sun: Chromosphere Sunspots Sun: Transition Region Sun: Uv Radiation |
DOI | 10.3847/1538-4357/aaa89d |
产权排序 | 第9完成单位 |
文献子类 | Article |
英文摘要 | Solid evidence of magnetic reconnection is rarely reported within sunspots, the darkest regions with the strongest magnetic fields and lowest temperatures in the solar atmosphere. Using the world's largest solar telescope, the 1.6 m Goode Solar Telescope, we detect prevalent reconnection through frequently occurring fine-scale jets in the Ha line wings at light bridges, the bright lanes that may divide the dark sunspot core into multiple parts. Many jets have an inverted Y-shape, shown by models to be typical of reconnection in a unipolar field environment. Simultaneous spectral imaging data from the Interface Region Imaging Spectrograph show that the reconnection drives bidirectional flows up to 200(.) km(.) s(-1), and that the weakly ionized plasma is heated by at least an order of magnitude up to similar to 80,000 K. Such highly dynamic reconnection jets and efficient heating should be properly accounted for in future modeling efforts of sunspots. Our observations also reveal that the surge-like activity previously reported above light bridges in some chromospheric passbands such as the Ha core has two components: the ever-present short surges likely to be related to the upward leakage of magnetoacoustic waves from the photosphere, and the occasionally occurring long and fast surges that are obviously caused by the intermittent reconnection jets. |
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 | X-RAY JETS ; MAGNETIC RECONNECTION ; ELLERMAN BOMBS ; ACTIVE-REGION ; EXPLOSIVE EVENTS ; DYNAMIC FIBRILS ; FLUX EMERGENCE ; PLASMA EJECTIONS ; CORONAL HOLE ; SOLAR-WIND |
资助项目 | NJIT ; US NSF[AGS-1250818] ; NASA[NNX13AG14G] ; Korea Astronomy and Space Science Institute (KASI), Seoul National University ; Strategic Priority Research Program of CAS[XDB09000000] ; ESA ; Norwegian Space Center ; NSFC[11790304] ; NSFC[41574166] ; NSFC[11573064] ; NSFC[11729301] ; NSFC[11573012] ; NSFC[11790300] ; Recruitment Program of Global Experts of China ; Max Planck Partner Group program, NASA grant[NNX15AF48G] ; European Research Council (ERC) under the European Union's Horizon research and innovation program[695075] ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; ISSI Bern international team "Solar UV bursts-a new insight to magnetic reconnection" ; AFOSR[FA9550-15-1-0322] ; NSF[AST-1614457] ; KASI |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000425306100015 |
资助机构 | NJIT ; US NSF[AGS-1250818] ; NASA[NNX13AG14G] ; Korea Astronomy and Space Science Institute (KASI), Seoul National University ; Strategic Priority Research Program of CAS[XDB09000000] ; ESA ; Norwegian Space Center ; NSFC[11790304, 41574166, 11573064, 11729301, 11573012, 11790300] ; Recruitment Program of Global Experts of China ; Max Planck Partner Group program, NASA grant[NNX15AF48G] ; European Research Council (ERC) under the European Union's Horizon research and innovation program[695075] ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; ISSI Bern international team "Solar UV bursts-a new insight to magnetic reconnection" ; AFOSR[FA9550-15-1-0322] ; NSF[AST-1614457] ; KASI |
源URL | [http://ir.ynao.ac.cn/handle/114a53/12292] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Tian, Hui |
作者单位 | 1.School of Earth and Space Sciences, Peking University, Beijing 100871, People's Republic of China 2.Big Bear Solar Observatory, New Jersey Institute of Technology, 40386 North Shore Lane, Big Bear City, CA 92314-9672, USA 3.Korea Astronomy and Space Science Institute, 776 Daedeok-daero, Yuseong-gu, Daejeon, 305-348, Republic of Korea 4.Max Planck Institute for Solar System Research, Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany 5.School of Space Research, Kyung Hee University, Yongin, Gyeonggi-Do,446-701, Republic of Korea 6.College of Science, George Mason University, Fairfax, VA 22030, USA 7.Code 671, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA 8.Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK 9.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China |
推荐引用方式 GB/T 7714 | Tian, Hui,Yurchyshyn, Vasyl,Peter, Hardi,et al. Frequently Occurring Reconnection Jets from Sunspot Light Bridges[J]. ASTROPHYSICAL JOURNAL,2018,854(2). |
APA | Tian, Hui.,Yurchyshyn, Vasyl.,Peter, Hardi.,Solanki, Sami K..,Young, Peter R..,...&Chen, Yajie.(2018).Frequently Occurring Reconnection Jets from Sunspot Light Bridges.ASTROPHYSICAL JOURNAL,854(2). |
MLA | Tian, Hui,et al."Frequently Occurring Reconnection Jets from Sunspot Light Bridges".ASTROPHYSICAL JOURNAL 854.2(2018). |
入库方式: OAI收割
来源:云南天文台
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