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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; van Driel-Gesztelyi, L (reprint author), Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England.
发表期刊ASTROPHYSICAL JOURNAL
2014-06-10
卷号788期号:1
DOI10.1088/0004-637X/788/1/85
产权排序第7完成单位
收录类别SCI
关键词Magnetic Reconnection Magnetohydrodynamics (Mhd) Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Magnetic Fields Sun: Uv Radiation
摘要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.
项目资助者European 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]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000337095200085
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DYNAMICS-OBSERVATORY SDO ; DERIVING PROMINENCE MASS ; HYPERBOLIC FLUX TUBES ; SOLAR-FLARE ; ABSORPTION FEATURES ; RETURNING PLASMA ; EJECTION ; ERUPTION ; MODEL ; WAVE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6250
专题太阳物理研究组
通讯作者van Driel-Gesztelyi, L (reprint author), Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England.
作者单位1.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
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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.,...&van Driel-Gesztelyi, L .(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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