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SLOW RISE AND PARTIAL ERUPTION OF A DOUBLE-DECKER FILAMENT. II. A DOUBLE FLUX ROPE MODEL
Bernhard Kliem1,2,3,4; Torok, T5; Titov, VS5; Lionello, R5; Linker, JA5; Liu, R6,7; Liu, C7; Wang, HM7
Source PublicationASTROPHYSICAL JOURNAL
2014-09-10
Volume792Issue:2
DOI10.1088/0004-637X/792/2/107
Contribution Rank第2完成单位
Indexed BySCI
Keywordinstabilities magnetohydrodynamics (MHD) Sun: coronal mass ejections (CMEs) Sun: filaments, prominences Sun: flares
Abstract

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.

Funding ProjectDFG ; STFC ; NSF[AGS-1249270] ; NSF[AGS-1153226] ; NSF[AGS-1348513] ; Chinese Academy of Sciences[2012T1J0017] ; NASA's HTP ; LWS ; SRT programs ; CISM (an NSF Science and Technology Center) ; NASA[NNX13AG13G] ; NASA[NNX13AF76G]
Funding OrganizationDFG ; STFC ; NSF[AGS-1249270, AGS-1153226, AGS-1348513] ; Chinese Academy of Sciences[2012T1J0017] ; NASA's HTP ; LWS ; SRT programs ; CISM (an NSF Science and Technology Center) ; NASA[NNX13AG13G, NNX13AF76G]
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:000341172200025
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTION ; SOLAR ACTIVE-REGION ; 2010 APRIL 8 ; MAGNETIC-STRUCTURE ; PROMINENCE ; EVOLUTION ; EQUILIBRIUM ; SIMULATIONS ; HELICITY ; SIGMOIDS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6244
Collection太阳物理研究组
Corresponding AuthorBernhard Kliem
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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).
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