Magnetic flux ropes in the solar corona: structure and evolution toward eruption

  title={Magnetic flux ropes in the solar corona: structure and evolution toward eruption},
  author={Rui Liu},
  journal={Research in Astronomy and Astrophysics},
  • Rui Liu
  • Published 22 July 2020
  • Physics
  • Research in Astronomy and Astrophysics
Magnetic flux ropes are characterized by coherently twisted magnetic field lines, which are ubiquitous in magnetized plasmas. As the core structure of various eruptive phenomena in the solar atmosphere, flux ropes hold the key to understanding the physical mechanisms of solar eruptions, which impact the heliosphere and planetary atmospheres. The strongést disturbances in the Earth’s space environments are often associated with large-scale flux ropes from the Sun colliding with the Earth’s… 
Numerical Investigations of Catastrophe in Coronal Magnetic Configuration Triggered by Newly Emerging Flux
We performed 2D magnetohydrodynamical numerical experiments to study the response of the coronal magnetic configuration to the newly emerging magnetic flux. The configuration includes an
Radiative Magnetohydrodynamic Simulation of the Confined Eruption of a Magnetic Flux Rope: Magnetic Structure and Plasma Thermodynamics
It is widely believed that magnetic flux ropes are the key structure of solar eruptions; however, their observable counterparts are not clear yet. We study a flare associated with flux rope eruption
Apparent Footpoint Rotation and Writhe of Double Hot Channels in a Solar Flare
We investigate the M6.5 class flare (SOL2015-06-22T18:23) occurring in NOAA Active Region 12371 on 2015 June 22. This eruptive flare is associated with a halo coronal mass ejection with a speed of
Validation and Interpretation of a Three-dimensional Configuration of a Magnetic Cloud Flux Rope
One strong magnetic cloud (MC) with a magnetic field magnitude reaching ∼40 nT at 1 au during 2012 June 16–17 is examined in association with a preexisting magnetic flux rope (MFR) identified on the
Eruptivity Criteria for Two-Dimensional Magnetic Flux Ropes in the Solar Corona
We apply the magneto-frictional approach to investigate which quantity or quantities can best predict the loss of equilibrium of a translationally-invariant magnetic flux rope. The flux rope is
Where and How Does a Decay-index Profile Become Saddle-like?
The decay index of solar magnetic fields is known as an important parameter in regulating solar eruptions from the standpoint of the torus instability. In particular, a saddle-like profile of decay
Transverse Coronal-Loop Oscillations Induced by the Non-radial Eruption of a Magnetic Flux Rope
We investigate the transverse coronal-loop oscillations induced by the eruption of a prominence-carrying flux rope on 7 December 2012. The flux rope originating from NOAA Active Region (AR) 11621 was
Quantitative Characterization of Magnetic Flux Rope Properties for Two Solar Eruption Events
In order to bridge the gap between heliospheric and solar observations of coronal mass ejections (CMEs), one of the key steps is to improve the understanding of their corresponding magnetic
A User’s Guide to the Magnetically Connected Space Weather System: A Brief Review
This article provides a concise review of the main physical structures and processes involved in space weather’s interconnected systems, emphasizing the critical roles played by magnetic topology and


Formation and eruption of solar prominences
A model for the magnetic field associated with solar prominences is considered. It is shown that flux cancellation at the neutral line of a sheared magnetic arcade leads to the formation of helical
The birth of a coronal mass ejection
An observation of how a stellar-sized CME bubble evolves continuously from plasmoids, mini flux ropes that are barely resolved, within half an hour illuminates a complete CME evolutionary path capable of accommodating a wide variety of plasma phenomena by bridging the gap between microscale and macroscale dynamics.
Ideal kink instability of a magnetic loop equilibrium
The force-free coronal loop model by Titov & Demoulin (1999) is found to be unstable with respect to the ideal kink mode, which suggests this instability as a mechanism for the initiation of flares.
A review on the genesis of coronal mass ejections
This paper provides a short review of some of the basic concepts related to the origin of coronal mass ejections (CMEs). The various ideas which have been put forward to explain the initiation of
Imaging solar coronal condensation forming prominences was difficult in the past, a situation recently changed by Hinode and the Solar Dynamics Observatory (SDO). We present the first example
J1’ and ‘J2’ in c1 illustrate the sheared J-shaped loops before eruption
  • 2010
RAA (Research in Astronomy
  • 2018
Plasma Physics and
  • Physics of Plasmas,
  • 2012
The Partial Expulsion of a Magnetic Flux Rope
We demonstrate the partial expulsion of a three-dimensional magnetic flux rope, in which an upper, escaping rope is separated from a lower, surviving rope by cusped, reconnecting loop field lines. We
We present an observational study on the impact of the dynamic evolution of kinking filaments on the production of hard X-ray (HXR) emission. The investigation of two kinking-filament events in this