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Multiband Study of a Bidirectional Jet Occurred in the Upper Chromosphere
Cai QW(蔡强伟)1,2,3; Shen, Chengcai4; Ni L(倪蕾)1,3; Reeves, Katharine K.4; Kang KF(康凯峰)1,2,3; Lin J(林隽)1,2,3
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2019-12-26
卷号124期号:12页码:9824-9846
DOI10.1029/2019JA027017
产权排序第1完成单位
收录类别SCI
摘要

We present a study of a jet observed by the Solar Dynamics Observatory (SDO) and the Interface Region Imaging Spectrograph (IRIS), which provide high spatial-temporal resolution observational data of (extreme) ultraviolet images, spectra, and magnetograms. The jet was observed in multiple bands of AIA and manifested clear bidirectional flows in IRIS observations. The emission profiles of the Si IV 1402 angstrom line of the jet exhibited non-Gaussian features and double-peaked spectra, with the Doppler velocity and the nonthermal velocity up to 100 and 160 km s-1, respectively. The plasma flows of the jet projected on the sky plane and in the line of sight (LOS) are the typical observational evidence of magnetic reconnection. The EM loci curves indicated that the plasma contains multi-temperature components. The result deduced from the DEM method and changes in intensity of several spectral lines imply that the temperature of the plasma in the jet is heated to at least 105.6 K. The electron density is about 1011 cm-3 according to the intensity ratios of the O IV 1399.77/1401.16 angstrom doublet and Si IV 1402.77/O IV 1401.16 angstrom lines. Via different approaches, we reached the conclusion that the jet occurred in the upper chromosphere. Investigating the magnetograms in the period when the jet appeared, we suggest that the jet results from the magnetic reconnection between the moving magnetic structure and the magnetic field nearby.

资助项目CAS[XDA17040507] ; CAS[QYZDJ-SSWSLH012] ; CAS[XDA15010900] ; NSFC[11573064] ; NSFC[U1631130] ; project of the Group for Innovation of Yunnan Province[2018HC023] ; Yunnan Ten-Thousand Talents Plan-Yunling Scholar Project ; Smithsonian Scholarly Studies Award ; ESA ; Norwegian Space Center
项目资助者CAS[XDA17040507, QYZDJ-SSWSLH012, XDA15010900] ; NSFC[11573064, U1631130] ; project of the Group for Innovation of Yunnan Province[2018HC023] ; Yunnan Ten-Thousand Talents Plan-Yunling Scholar Project ; Smithsonian Scholarly Studies Award ; ESA ; Norwegian Space Center
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学::天文学
文章类型Article
出版者AMER GEOPHYSICAL UNION
出版地2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
ISSN2169-9380
URL查看原文
WOS记录号WOS:000504372000001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]X-RAY JETS ; MAGNETIC RECONNECTION ; EXTREME-ULTRAVIOLET ; TRANSITION REGION ; EXPLOSIVE EVENTS ; CORONAL JETS ; PLASMA JETS ; SOLAR-FLARE ; QUIET-SUN ; ALPHA
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/22100
专题太阳物理研究组
通讯作者Lin J(林隽)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
2.University of Chinese Academy of Sciences, Beijing, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, China
4.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Cai QW,Shen, Chengcai,Ni L,et al. Multiband Study of a Bidirectional Jet Occurred in the Upper Chromosphere[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019,124(12):9824-9846.
APA Cai QW,Shen, Chengcai,Ni L,Reeves, Katharine K.,Kang KF,&Lin J.(2019).Multiband Study of a Bidirectional Jet Occurred in the Upper Chromosphere.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,124(12),9824-9846.
MLA Cai QW,et al."Multiband Study of a Bidirectional Jet Occurred in the Upper Chromosphere".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124.12(2019):9824-9846.
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