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CORONAL MAGNETIC RECONNECTION DRIVEN BY CME EXPANSION-THE 2011 JUNE 7 EVENT
van Driel-Gesztelyi, L1,2,3; Baker, D1; Torok, T4; Pariat, E2; Green, LM1; Williams, DR1; Carlyle, J1,5; Valori, G2; Demoulin, P2; Berhard Kliem1,6,7; Long, DM1; Matthews, SA1; Malherbe, JM2
Source PublicationASTROPHYSICAL JOURNAL
2014-06-10
Volume788Issue:1
DOI10.1088/0004-637X/788/1/85
Contribution Rank第7完成单位
Indexed BySCI
KeywordMagnetic Reconnection Magnetohydrodynamics (Mhd) Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Magnetic Fields Sun: Uv Radiation
Abstract

Coronal mass ejections (CMEs) erupt and expand in a magnetically structured solar corona. Various indirect observational pieces of evidence have shown that the magnetic field of CMEs reconnects with surrounding magnetic fields, forming, e.g., dimming regions distant from the CME source regions. Analyzing Solar Dynamics Observatory (SDO) observations of the eruption from AR 11226 on 2011 June 7, we present the first direct evidence of coronal magnetic reconnection between the fields of two adjacent active regions during a CME. The observations are presented jointly with a data-constrained numerical simulation, demonstrating the formation/intensification of current sheets along a hyperbolic flux tube at the interface between the CME and the neighboring AR 11227. Reconnection resulted in the formation of new magnetic connections between the erupting magnetic structure from AR 11226 and the neighboring active region AR 11227 about 200 Mm from the eruption site. The onset of reconnection first becomes apparent in the SDO/AIA images when filament plasma, originally contained within the erupting flux rope, is redirected toward remote areas in AR 11227, tracing the change of large-scale magnetic connectivity. The location of the coronal reconnection region becomes bright and directly observable at SDO/AIA wavelengths, owing to the presence of down-flowing cool, dense (1010 cm(-3)) filament plasma in its vicinity. The high-density plasma around the reconnection region is heated to coronal temperatures, presumably by slow-mode shocks and Coulomb collisions. These results provide the first direct observational evidence that CMEs reconnect with surrounding magnetic structures, leading to a large-scale reconfiguration of the coronal magnetic field.

Funding ProjectEuropean Union's Seventh Programme for Research, Technological Development and Demonstration[284461] ; Hungarian Research grants[OTKA K-081421] ; Hungarian Research grants[K-109276] ; STFC Consolidated Grant[ST/H00260/1] ; NASA ; NSF[AGS-1249270] ; Royal Society ; UCL ; MPI ; DFG ; Chinese Academy of Sciences[2012T1J0017]
Funding OrganizationEuropean Union's Seventh Programme for Research, Technological Development and Demonstration[284461] ; Hungarian Research grants[OTKA K-081421, K-109276] ; STFC Consolidated Grant[ST/H00260/1] ; NASA ; NSF[AGS-1249270] ; Royal Society ; UCL ; MPI ; DFG ; Chinese Academy of Sciences[2012T1J0017]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000337095200085
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDYNAMICS-OBSERVATORY SDO ; DERIVING PROMINENCE MASS ; HYPERBOLIC FLUX TUBES ; SOLAR-FLARE ; ABSORPTION FEATURES ; RETURNING PLASMA ; EJECTION ; ERUPTION ; MODEL ; WAVE
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6250
Collection太阳物理研究组
Corresponding Authorvan Driel-Gesztelyi, L
Affiliation1.University College London, Mullard Space Science Laboratory, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
2.Observatoire de Paris, LESIA, UMR 8109 (CNRS), F-92195 Meudon-Principal Cedex, France
3.Konkoly Observatory of the Hungarian Academy of Sciences, Budapest, Hungary
4.Predictive Science Inc., 9990 Mesa Rim Road, Street 170, San Diego, CA 92121, USA
5.Max-Planck Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany
6.Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam, Germany
7.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
Recommended Citation
GB/T 7714
van Driel-Gesztelyi, L,Baker, D,Torok, T,et al. CORONAL MAGNETIC RECONNECTION DRIVEN BY CME EXPANSION-THE 2011 JUNE 7 EVENT[J]. ASTROPHYSICAL JOURNAL,2014,788(1).
APA van Driel-Gesztelyi, L.,Baker, D.,Torok, T.,Pariat, E.,Green, LM.,...&Malherbe, JM.(2014).CORONAL MAGNETIC RECONNECTION DRIVEN BY CME EXPANSION-THE 2011 JUNE 7 EVENT.ASTROPHYSICAL JOURNAL,788(1).
MLA van Driel-Gesztelyi, L,et al."CORONAL MAGNETIC RECONNECTION DRIVEN BY CME EXPANSION-THE 2011 JUNE 7 EVENT".ASTROPHYSICAL JOURNAL 788.1(2014).
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