Quasi-static and dynamic magnetic tension forces in arched, line-tied magnetic flux ropes

C. E. Myers, M. Yamada, H. Ji, J. Yoo, J. Jara-Almonte, W. Fox

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Solar eruptions are often driven by magnetohydrodynamic instabilities such as the torus and kink instabilities that act on line-tied magnetic flux ropes. Recent laboratory experiments designed to study these eruptive instabilities have demonstrated the key role of both dynamic (Myers et al 2015 Nature 528 526) and quasi-static (Myers et al 2016 Phys. Plasmas 23 112102) magnetic tension forces in contributing to the equilibrium and stability of line-tied magnetic flux ropes. In this paper, we synthesize these laboratory results and explore the relationship between the dynamic and quasi-static tension forces. While the quasi-static tension force is found to contribute to the flux rope equilibrium in a number of regimes, the dynamic tension force is substantial mostly in the so-called failed torus regime where magnetic self-organization events prevent the flux rope from erupting.

Original languageEnglish (US)
Article number014048
JournalPlasma Physics and Controlled Fusion
Volume59
Issue number1
DOIs
StatePublished - Jan 2017

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Keywords

  • coronal mass ejections
  • failed eruptions
  • laboratory astrophysics
  • magnetic flux ropes

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