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Drifting of the line-tied footpoints of CME flux-ropes
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SYSNO ASEP 0510982 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Drifting of the line-tied footpoints of CME flux-ropes Author(s) Aulanier, G. (FR)
Dudík, Jaroslav (ASU-R) RID, ORCIDArticle number A72 Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 621, January (2019)Number of pages 13 s. Publication form Online - E Language eng - English Country FR - France Keywords magnetic reconnection ; magnetohydrodynamics ; coronal mass ejections Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) R&D Projects GA17-16447S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support ASU-R - RVO:67985815 UT WOS 000455270600003 EID SCOPUS 85059952742 DOI 10.1051/0004-6361/201834221 Annotation Existing 3D extensions to the standard model show that flux-rope footpoints are surrounded by curved-shaped quasi-separatrix layer (QSL) footprints that can be related with hook-shaped flare-ribbons. We build upon this finding and further address the joint questions of their time-evolution, and of the formation of flare loops at the ends of the flaring polarity inversion line (PIL) of the erupting bipole, which are both relevant for flare understanding in general and for interplanetary CME studies in particular. Our model predicts continuous deformations and a drifting of interplanetary CME flux-rope footpoints whose areas are surrounded by equally evolving hooked-shaped flare-ribbons, as well as the formation of flare loops at the ends of flaring PILs which originate from the flux-rope itself, both of which being due to purely three-dimensional reconnection geometries. The observed evolution of flare-ribbons in two events supports the model, but more observations are required to test all its predictions. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0301330
Number of the records: 1