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MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8
Bernhard Kliem1,2,3,4; Su, YN5; van Ballegooijen, AA5; DeLuca, EE5
Source PublicationASTROPHYSICAL JOURNAL
2013-12-20
Volume779Issue:2
DOI10.1088/0004-637X/779/2/129
Contribution Rank第3完成单位
Indexed BySCI
Keywordmagnetohydrodynamics (MHD) Sun: corona Sun: coronal mass ejections (CMEs) Sun: filaments, prominences Sun: flares Sun: magnetic fields
Abstract

The structure of the coronal magnetic field prior to eruptive processes and the conditions for the onset of eruption are important issues that can be addressed through studying the magnetohydrodynamic (MHD) stability and evolution of nonlinear force-free field (NLFFF) models. This paper uses data-constrained NLFFF models of a solar active region (AR) that erupted on 2010 April 8 as initial conditions in MHD simulations. These models, constructed with the techniques of flux rope insertion and magnetofrictional relaxation (MFR), include a stable, an approximately marginally stable, and an unstable configuration. The simulations confirm previous related results of MFR runs, particularly that stable flux rope equilibria represent key features of the observed pre-eruption coronal structure very well, and that there is a limiting value of the axial flux in the rope for the existence of stable NLFFF equilibria. The specific limiting value is located within a tighter range, due to the sharper discrimination between stability and instability by the MHD description. The MHD treatment of the eruptive configuration yields a very good agreement with a number of observed features, like the strongly inclined initial rise path and the close temporal association between the coronal mass ejection and the onset of flare reconnection. Minor differences occur in the velocity of flare ribbon expansion and in the further evolution of the inclination; these can be eliminated through refined simulations. We suggest that the slingshot effect of horizontally bent flux in the source region of eruptions can contribute significantly to the inclination of the rise direction. Finally, we demonstrate that the onset criterion, formulated in terms of a threshold value for the axial flux in the rope, corresponds very well to the threshold of the torus instability in the considered AR.

Funding ProjectDFG ; STFC ; NSF[AGS-1249270] ; Chinese Academy of Sciences[2012T1J0017] ; NASA[NNM07AB07C] ; LMSAL[SP02H1701R]
Funding OrganizationDFG ; STFC ; NSF[AGS-1249270] ; Chinese Academy of Sciences[2012T1J0017] ; NASA[NNM07AB07C] ; LMSAL[SP02H1701R]
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:000328187200039
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; ACTIVE-REGION 10953 ; POLAR-CROWN PROMINENCE ; HYPERBOLIC FLUX TUBES ; MAGNETIC-FIELD ; ROPE ERUPTION ; FILAMENT ; SUN ; FLARE ; EXTRAPOLATION
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6216
Collection太阳物理研究组
Corresponding AuthorBernhard Kliem
Affiliation1.Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam, Germany
2.Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
3.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
4.College of Science, George Mason University, Fairfax, VA 22030, USA
5.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Bernhard Kliem,Su, YN,van Ballegooijen, AA,et al. MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8[J]. ASTROPHYSICAL JOURNAL,2013,779(2).
APA Bernhard Kliem,Su, YN,van Ballegooijen, AA,&DeLuca, EE.(2013).MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8.ASTROPHYSICAL JOURNAL,779(2).
MLA Bernhard Kliem,et al."MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8".ASTROPHYSICAL JOURNAL 779.2(2013).
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