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TEMPORAL EVOLUTION OF THE MAGNETIC TOPOLOGY OF THE NOAA ACTIVE REGION 11158
Zhao, Jie1,2; Li, Hui1,2; Pariat, Etienne3; Schmieder, Brigitte3; Guo, Yang4; Wiegelmann, Thomas5
2014-05-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume787Issue:1Pages:0
AbstractWe studied the temporal evolution of the magnetic topology of the active region (AR) 11158 based on the reconstructed three-dimensional magnetic fields in the corona. The non-linear force-free field extrapolation method was applied to the 12 minute cadence data obtained with the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory during 5 days. By calculating the squashing degree factor Q in the volume, the derived quasi-separatrix layers (QSLs) show that this AR has an overall topology, resulting from a magnetic quadrupole, including a hyperbolic flux tube (HFT) configuration that is relatively stable at the timescale of the flare (similar to 1-2 hr). A strong QSL, which corresponds to some highly sheared arcades that might be related to the formation of a flux rope, is prominent just before the M6.6 and X2.2 flares, respectively. These facts indicate the close relationship between the strong QSL and the high flare productivity of AR 11158. In addition, with a close inspection of the topology, we found a small-scale HFT that has an inverse tear-drop structure above the aforementioned QSL before the X2.2 flare. It indicates the existence of magnetic flux rope at this place. Even though a global configuration (HFT) is recognized in this AR, it turns out that the large-scale HFT only plays a secondary role during the eruption. In conclusion, we dismiss a trigger based on the breakout model and highlight the central role of the flux rope in the related eruption.
KeywordSun: Corona Sun: Flares Sun: Magnetic Fields
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/787/1/88
WOS KeywordCORONAL MASS EJECTIONS ; QUASI-SEPARATRIX LAYERS ; HYPERBOLIC FLUX TUBES ; 2011 FEBRUARY 15 ; DYNAMICS-OBSERVATORY SDO ; SOLAR-FLARES ; X2.2 FLARE ; MAGNETOHYDRODYNAMIC SIMULATION ; RECONNECTION DRIVEN ; CONFINED ERUPTION
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Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000335924200088
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10627
Collection太阳高能及相关物理过程研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
3.Observ Paris, LESIA, F-92195 Meudon, France
4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
5.Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany
Recommended Citation
GB/T 7714
Zhao, Jie,Li, Hui,Pariat, Etienne,et al. TEMPORAL EVOLUTION OF THE MAGNETIC TOPOLOGY OF THE NOAA ACTIVE REGION 11158[J]. ASTROPHYSICAL JOURNAL,2014,787(1):0.
APA Zhao, Jie,Li, Hui,Pariat, Etienne,Schmieder, Brigitte,Guo, Yang,&Wiegelmann, Thomas.(2014).TEMPORAL EVOLUTION OF THE MAGNETIC TOPOLOGY OF THE NOAA ACTIVE REGION 11158.ASTROPHYSICAL JOURNAL,787(1),0.
MLA Zhao, Jie,et al."TEMPORAL EVOLUTION OF THE MAGNETIC TOPOLOGY OF THE NOAA ACTIVE REGION 11158".ASTROPHYSICAL JOURNAL 787.1(2014):0.
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