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

	SLOW RISE AND PARTIAL ERUPTION OF A DOUBLE-DECKER FILAMENT. II. A DOUBLE FLUX ROPE MODEL
	Bernhard Kliem 1,2,3,4; Torok, T 5; Titov, VS 5; Lionello, R 5; Linker, JA 5; Liu, R 6,7; Liu, C7 ; Wang, HM 7
刊名	ASTROPHYSICAL JOURNAL
	2014-09-10
卷号	792 期号:2
关键词	instabilities magnetohydrodynamics (MHD) Sun: coronal mass ejections (CMEs) Sun: filaments Sun: flares prominences
ISSN号	0004-637X
通讯作者	Kliem, B (reprint author), Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24, D-14476 Potsdam, Germany.
产权排序	第二完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CORONAL MASS EJECTION ; SOLAR ACTIVE-REGION ; 2010 APRIL 8 ; MAGNETIC-STRUCTURE ; PROMINENCE ; EVOLUTION ; EQUILIBRIUM ; SIMULATIONS ; HELICITY ; SIGMOIDS
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-637X/792/2/107/meta
语种	英语
WOS记录号	WOS:000341172200025
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6244]
专题	云南天文台_太阳物理研究组
作者单位	1.Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Strasse 24, D-14476 Potsdam, Germany 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 3.Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK 4.College of Science, George Mason University, Fairfax, VA 22030, USA 5.Predictive Science, Inc., San Diego, CA 92121, USA 6.CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei 230026, China 7.Space Weather Research Laboratory, Center for Solar-Terrestrial Research, NJIT, Newark, NJ 07102, USA
推荐引用方式 GB/T 7714	Bernhard Kliem,Torok, T,Titov, VS,et al. SLOW RISE AND PARTIAL ERUPTION OF A DOUBLE-DECKER FILAMENT. II. A DOUBLE FLUX ROPE MODEL[J]. ASTROPHYSICAL JOURNAL,2014,792(2).
APA	Bernhard Kliem.,Torok, T.,Titov, VS.,Lionello, R.,Linker, JA.,...&Wang, HM.(2014).SLOW RISE AND PARTIAL ERUPTION OF A DOUBLE-DECKER FILAMENT. II. A DOUBLE FLUX ROPE MODEL.ASTROPHYSICAL JOURNAL,792(2).
MLA	Bernhard Kliem,et al."SLOW RISE AND PARTIAL ERUPTION OF A DOUBLE-DECKER FILAMENT. II. A DOUBLE FLUX ROPE MODEL".ASTROPHYSICAL JOURNAL 792.2(2014).