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THE RELATION BETWEEN SOLAR ERUPTION TOPOLOGIES AND OBSERVED FLARE FEATURES. II. DYNAMICAL EVOLUTION
Savcheva, A.1; Pariat, E.2; McKillop, S.1; McCauley, P.1; Hanson, E.3; Su, Y.1,4; DeLuca, E. E.1
2016-01-20
Source PublicationASTROPHYSICAL JOURNAL
Volume817Issue:1
AbstractA long-established goal of solar physics is to build understanding of solar eruptions and develop flare and coronal mass ejection (CME) forecasting models. In this paper, we continue our investigation of nonlinear forces free field (NLFFF) models by comparing topological properties of the solutions to the evolution of the flare ribbons. In particular, we show that data-constrained NLFFF models of three erupting sigmoid regions (SOL2010-04-08, SOL2010-08-07, and SOL2012-05-12) built to reproduce the active region magnetic field in the pre-flare state can be rendered unstable and the subsequent sequence of unstable solutions produces quasi-separatrix layers that match the flare ribbon evolution as observed by SDO/AIA. We begin with a best-fit equilibrium model for the pre-flare active region. We then add axial flux to the flux rope in the model to move it across the stability boundary. At this point, the magnetofrictional code no longer converges to an equilibrium solution. The flux rope rises as the solutions are iterated. We interpret the sequence of magnetofrictional steps as an evolution of the active region as the flare/CME begins. The magnetic field solutions at different steps are compared with the flare ribbons. The results are fully consistent with the three-dimensional extension of the standard flare/CME model. Our ability to capture essential topological features of flaring active regions with a non-dynamic magnetofrictional code strongly suggests that the pre-flare, large-scale topological structures are preserved as the flux rope becomes unstable and lifts off.
KeywordSun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Magnetic Fields Sun: X-Rays, Gamma Rays
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3847/0004-637X/817/1/43
WOS Keyword3-DIMENSIONAL MAGNETIC RECONNECTION ; SLIP-RUNNING RECONNECTION ; QUASI-SEPARATRIX LAYERS ; POLAR CROWN PROMINENCE ; X-RAY TELESCOPE ; 2010 APRIL 8 ; ACTIVE-REGION ; FLUX-ROPE ; ELECTRIC-CURRENTS ; 2-RIBBON FLARES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000368872400043
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16130
Collection太阳高能及相关物理过程研究团组
Affiliation1.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
2.Univ Paris Diderot, CNRS, UPMC, LESIA,Observ Paris,PSL Res Univ, F-92190 Meudon, France
3.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
4.Chinese Acad Sci, Key Lab Dark Matter & Space Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Savcheva, A.,Pariat, E.,McKillop, S.,et al. THE RELATION BETWEEN SOLAR ERUPTION TOPOLOGIES AND OBSERVED FLARE FEATURES. II. DYNAMICAL EVOLUTION[J]. ASTROPHYSICAL JOURNAL,2016,817(1).
APA Savcheva, A..,Pariat, E..,McKillop, S..,McCauley, P..,Hanson, E..,...&DeLuca, E. E..(2016).THE RELATION BETWEEN SOLAR ERUPTION TOPOLOGIES AND OBSERVED FLARE FEATURES. II. DYNAMICAL EVOLUTION.ASTROPHYSICAL JOURNAL,817(1).
MLA Savcheva, A.,et al."THE RELATION BETWEEN SOLAR ERUPTION TOPOLOGIES AND OBSERVED FLARE FEATURES. II. DYNAMICAL EVOLUTION".ASTROPHYSICAL JOURNAL 817.1(2016).
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