SLOW RISE AND PARTIAL ERUPTION OF A DOUBLE-DECKER FILAMENT. II. A DOUBLE FLUX ROPE MODEL

被引:78
作者
Kliem, Bernhard [1 ,2 ,3 ,4 ]
Toeroek, Tibor [5 ]
Titov, Viacheslav S. [5 ]
Lionello, Roberto [5 ]
Linker, Jon A. [5 ]
Liu, Rui [6 ,7 ]
Liu, Chang [7 ]
Wang, Haimin [7 ]
机构
[1] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany
[2] Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
[3] Univ Coll London, Mullard Space Sci Lab, Surrey RH5 6NT, England
[4] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA
[5] Predict Sci Inc, San Diego, CA 92121 USA
[6] Univ Sci & Technol China, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China
[7] NJIT, Ctr Solar Terr Res, Space Weather Res Lab, Newark, NJ 07102 USA
基金
美国国家科学基金会;
关键词
instabilities; magnetohydrodynamics (MHD); Sun: coronal mass ejections (CMEs); Sun:; filaments; prominences; Sun: flares; CORONAL MASS EJECTION; SOLAR ACTIVE-REGION; 2010; APRIL; 8; MAGNETIC-STRUCTURE; PROMINENCE; EVOLUTION; EQUILIBRIUM; SIMULATIONS; HELICITY; SIGMOIDS;
D O I
10.1088/0004-637X/792/2/107
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Force-free equilibria containing two vertically arranged magnetic flux ropes of like chirality and current direction are considered as a model for split filaments/prominences and filament-sigmoid systems. Such equilibria are constructed analytically through an extension of the methods developed in Titov & Demoulin and numerically through an evolutionary sequence including shear flows, flux emergence, and flux cancellation in the photospheric boundary. It is demonstrated that the analytical equilibria are stable if an external toroidal (shear) field component exceeding a threshold value is included. If this component decreases sufficiently, then both flux ropes turn unstable for conditions typical of solar active regions, with the lower rope typically becoming unstable first. Either both flux ropes erupt upward, or only the upper rope erupts while the lower rope reconnects with the ambient flux low in the corona and is destroyed. However, for shear field strengths staying somewhat above the threshold value, the configuration also admits evolutions which lead to partial eruptions with only the upper flux rope becoming unstable and the lower one remaining in place. This can be triggered by a transfer of flux and current from the lower to the upper rope, as suggested by the observations of a split filament in Paper I. It can also result from tether-cutting reconnection with the ambient flux at the X-type structure between the flux ropes, which similarly influences their stability properties in opposite ways. This is demonstrated for the numerically constructed equilibrium.
引用
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页数:10
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共 40 条
[1]   Coronal mass ejection: Initiation, magnetic helicity, and flux ropes. I. Boundary motion driven evolution [J].
Amari, T ;
Luciani, JF ;
Aly, JJ ;
Mikic, Z ;
Linker, J .
ASTROPHYSICAL JOURNAL, 2003, 585 (02) :1073-1086
[2]   FORMATION OF TORUS-UNSTABLE FLUX ROPES AND ELECTRIC CURRENTS IN ERUPTING SIGMOIDS [J].
Aulanier, G. ;
Toeroek, T. ;
Demoulin, P. ;
DeLuca, E. E. .
ASTROPHYSICAL JOURNAL, 2010, 708 (01) :314-333
[3]   From the Sun to the Earth: The 13 May 2005 Coronal Mass Ejection [J].
Bisi, M. M. ;
Breen, A. R. ;
Jackson, B. V. ;
Fallows, R. A. ;
Walsh, A. P. ;
Mikic, Z. ;
Riley, P. ;
Owen, C. J. ;
Gonzalez-Esparza, A. ;
Aguilar-Rodriguez, E. ;
Morgan, H. ;
Jensen, E. A. ;
Wood, A. G. ;
Owens, M. J. ;
Tokumaru, M. ;
Manoharan, P. K. ;
Chashei, I. V. ;
Giunta, A. S. ;
Linker, J. A. ;
Shishov, V. I. ;
Tyul'bashev, S. A. ;
Agalya, G. ;
Glubokova, S. K. ;
Hamilton, M. S. ;
Fujiki, K. ;
Hick, P. P. ;
Clover, J. M. ;
Pinter, B. .
SOLAR PHYSICS, 2010, 265 (1-2) :49-127
[4]   FORMATION OF A DOUBLE-DECKER MAGNETIC FLUX ROPE IN THE SIGMOIDAL SOLAR ACTIVE REGION 11520 [J].
Cheng, X. ;
Ding, M. D. ;
Zhang, J. ;
Sun, X. D. ;
Guo, Y. ;
Wang, Y. M. ;
Kliem, B. ;
Deng, Y. Y. .
ASTROPHYSICAL JOURNAL, 2014, 789 (02)
[5]   ON THE ERUPTION OF CORONAL FLUX ROPES [J].
Fan, Y. .
ASTROPHYSICAL JOURNAL, 2010, 719 (01) :728-736
[6]   The partial expulsion of a magnetic flux rope [J].
Gibson, SE ;
Fan, Y .
ASTROPHYSICAL JOURNAL, 2006, 637 (01) :L65-L68
[7]   Observational interpretation of an active prominence on 1999 May 1 [J].
Gilbert, HR ;
Holzer, TE ;
Low, BC ;
Burkepile, JT .
ASTROPHYSICAL JOURNAL, 2001, 549 (02) :1221-1230
[8]   A three-dimensional line-tied magnetic field model for solar eruptions [J].
Isenberg, Philip A. ;
Forbes, Terry G. .
ASTROPHYSICAL JOURNAL, 2007, 670 (02) :1453-1466
[9]   Torus instability [J].
Kliem, B. ;
Torok, T. .
PHYSICAL REVIEW LETTERS, 2006, 96 (25)
[10]   MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8 [J].
Kliem, B. ;
Su, Y. N. ;
van Ballegooijen, A. A. ;
DeLuca, E. E. .
ASTROPHYSICAL JOURNAL, 2013, 779 (02)