Spectroscopic Observations of Magnetic Reconnection and Chromospheric Evaporation in an X-shaped Solar Flare

doi:10.3847/1538-4357/aa89e4

	Spectroscopic Observations of Magnetic Reconnection and Chromospheric Evaporation in an X-shaped Solar Flare
	Gan, W. Q.1; Qiu, J.3; Zhu, X. S.4; Ding, M. D.2,5; Kelly, M.3; Li, Y.1,2,3,4,5
刊名	ASTROPHYSICAL JOURNAL
	2017-10-20
卷号	848 期号:2
关键词	Line: Profiles Sun: Chromosphere Sun: Corona Sun: Flares Sun: Uv Radiation
DOI	10.3847/1538-4357/aa89e4
文献子类	Article
英文摘要	We present observations of distinct UV spectral properties at different locations during an atypical X-shaped flare (SOL2014-11-09T15:32) observed by the Interface Region Imaging Spectrograph (IRIS). In this flare, four chromospheric ribbons appear and converge at an X-point where a separator is anchored. Above the X-point, two sets of non-coplanar coronal loops approach laterally and reconnect at the separator. The IRIS. slit was located close to the X-point, cutting across some of the flare ribbons and loops. Near the location of the separator, the Si IV 1402.77 angstrom line exhibits significantly broadened line wings extending to 200 km s(-1) with an unshifted line core. These spectral features suggest the presence of bidirectional flows possibly related to the separator reconnection. While at the flare ribbons, the hot Fe XXI 1354.08 angstrom line shows blueshifts and the cool Si IV 1402.77 angstrom, C II 1335.71 angstrom, and Mg II 2803.52 angstrom lines show evident redshifts up to a velocity of 80 km s(-1), which are consistent with the scenario of chromospheric evaporation/condensation.
WOS关键词	LOOP RADIATIVE HYDRODYNAMICS ; CORONAL DIAGNOSTIC SPECTROMETER ; IMAGING-SPECTROGRAPH IRIS ; HIGH TIME RESOLUTION ; IMPULSIVE PHASE ; EXPLOSIVE EVENTS ; MOMENTUM BALANCE ; MAXIMUM MISSION ; SUPRA-ARCADE ; ULTRAVIOLET
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000413339200018
资助机构	Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract ; Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract ; NSFC(11373023 ; NSFC(11373023 ; NKBRSF(2014CB744203) ; NKBRSF(2014CB744203) ; ASO-S grant(U1731241) ; ASO-S grant(U1731241) ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Key Laboratory of Solar Activity of National Astronomical Observatories of the Chinese Academy of Sciences(KLSA201712) ; Key Laboratory of Solar Activity of National Astronomical Observatories of the Chinese Academy of Sciences(KLSA201712) ; ISSI from team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; ISSI from team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; ISSI-BJ from the team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; ISSI-BJ from the team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; NSF(1460059) ; NSF(1460059) ; 11403011 ; 11403011 ; 11733003 ; 11733003 ; 11233008 ; 11233008 ; 11427803) ; 11427803) ; Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract ; Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract ; NSFC(11373023 ; NSFC(11373023 ; NKBRSF(2014CB744203) ; NKBRSF(2014CB744203) ; ASO-S grant(U1731241) ; ASO-S grant(U1731241) ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Key Laboratory of Solar Activity of National Astronomical Observatories of the Chinese Academy of Sciences(KLSA201712) ; Key Laboratory of Solar Activity of National Astronomical Observatories of the Chinese Academy of Sciences(KLSA201712) ; ISSI from team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; ISSI from team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; ISSI-BJ from the team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; ISSI-BJ from the team "Diagnosing Heating Mechanisms in Solar Flares through Spectroscopic Observations of Flare Ribbons" ; NSF(1460059) ; NSF(1460059) ; 11403011 ; 11403011 ; 11733003 ; 11733003 ; 11233008 ; 11233008 ; 11427803) ; 11427803)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20094]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China 3.Montana State Univ, Dept Phys, Bozeman, MT 59717 USA 4.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China 5.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Gan, W. Q.,Qiu, J.,Zhu, X. S.,et al. Spectroscopic Observations of Magnetic Reconnection and Chromospheric Evaporation in an X-shaped Solar Flare[J]. ASTROPHYSICAL JOURNAL,2017,848(2).
APA	Gan, W. Q.,Qiu, J.,Zhu, X. S.,Ding, M. D.,Kelly, M.,&Li, Y..(2017).Spectroscopic Observations of Magnetic Reconnection and Chromospheric Evaporation in an X-shaped Solar Flare.ASTROPHYSICAL JOURNAL,848(2).
MLA	Gan, W. Q.,et al."Spectroscopic Observations of Magnetic Reconnection and Chromospheric Evaporation in an X-shaped Solar Flare".ASTROPHYSICAL JOURNAL 848.2(2017).