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Spectroscopic and imaging observations of small-scale reconnection events
Li, Dong; Li, Leping; Ning, Zongjun; Li, D (reprint author), Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210034, Jiangsu, Peoples R China.; Li, D (reprint author), Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China.; Li, D (reprint author), Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China.
作者部门微波遥感部
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018
卷号479期号:2页码:2382-2388
ISSN0035-8711
语种英语
关键词Line: Profiles Magnetic Reconnection Sun: Corona Sun: Transition Region Sun: Uv Radiation
摘要We present spectroscopic and imaging observations of small-scale reconnection events on the Sun. Using Interface Region Imaging Spectrograph (IRIS) observations, one reconnection event is first detected as IRIS jets with fast bidirectional velocities in the chromosphere and transition region, which are identified as non-Gaussian broadenings with two extended wings in the line profiles of SiIV, C II and MgIIk. The magnetograms under the IRIS jets from helioseismic and magnetic images simultaneously exhibit magnetic flux cancellation, supporting the idea that the IRIS jets are driven by magnetic reconnection. Atmospheric Imaging Assembly images also show an extreme ultraviolet (EUV) brightening shortly after the underlying IRIS jets, i.e. in the 131-, 171-, 193-, 211- and 94-angstrom channels, implying that the overlying EUV brightening in the corona is caused by the IRIS jets in the chromosphere and transition region. We also find another three reconnection events, which show the same features during this IRIS observation. Our observational results suggest that small-scale reconnection events might contribute to coronal heating. A new result is that the process of magnetic reconnection is detected from the photosphere through the chromosphere and transition region to the corona.
收录类别SCI
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6401
专题微波遥感部
通讯作者Li, D (reprint author), Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210034, Jiangsu, Peoples R China.; Li, D (reprint author), Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China.; Li, D (reprint author), Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China.
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Li, Dong,Li, Leping,Ning, Zongjun,et al. Spectroscopic and imaging observations of small-scale reconnection events[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,479(2):2382-2388.
APA Li, Dong,Li, Leping,Ning, Zongjun,Li, D ,Li, D ,&Li, D .(2018).Spectroscopic and imaging observations of small-scale reconnection events.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,479(2),2382-2388.
MLA Li, Dong,et al."Spectroscopic and imaging observations of small-scale reconnection events".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 479.2(2018):2382-2388.
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