Spectroscopic and imaging observations of small-scale reconnection events

doi:10.1093/mnras/sty1712

CORC > 国家天文台 > 中国科学院国家天文台

	Spectroscopic and imaging observations of small-scale reconnection events
	Li, Dong 1,2,3; Li, Leping 1; Ning, Zongjun 3
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-09-01
卷号	479 期号:2 页码:2382-2388
关键词	line: profiles magnetic reconnection Sun: corona Sun: transition region Sun: UV radiation
ISSN号	0035-8711
DOI	10.1093/mnras/sty1712
英文摘要	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.
资助项目	ESA ; Norwegian Space Centre ; NSFC[11603077] ; NSFC[11573072] ; NSFC[11673034] ; NSFC[11533008] ; NSFC[11773079] ; NSFC[11790302] ; NSFC[11333009] ; CRP[KLSA201708] ; Youth Fund of Jiangsu[BK20161095] ; Youth Fund of Jiangsu[BK20171108] ; National Natural Science Foundation of China[U1731241] ; Strategic Priority Research Program on Space Science, CAS[XDA15052200] ; Strategic Priority Research Program on Space Science, CAS[XDA15320301] ; Specialized Research Fund for State Key Laboratories[2010DP173032]
WOS关键词	TRANSITION-REGION BLINKERS ; QUIET SOLAR CORONA ; EXPLOSIVE EVENTS ; MAGNETIC RECONNECTION ; BRIGHT POINTS ; CURRENT SHEET ; FLARE ; SUN ; DYNAMICS ; ENERGY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000441380100066
资助机构	ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/22226]
专题	中国科学院国家天文台
通讯作者	Li, Dong
作者单位	1.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China 2.Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210034, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Li, Dong,Li, Leping,Ning, Zongjun. 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.(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.