Torus instability

Abstract

The expansion instability of a toroidal current ring in low-beta magnetized plasma is investigated. Qualitative agreement is obtained with experiments on spheromak expansion and with essential properties of solar coronal mass ejections, unifying the two apparently disparate classes of fast and slow coronal mass ejections.

minor update to conform to printed version

References in corpus (3)

• Confined and ejective eruptions of kink-unstable flux ropes
• Ideal kink instability of a magnetic loop equilibrium
• Experimental Identification of the Kink Instability as a Poloidal Flux Amplification Mechanism for Coaxial Gun Spheromak Formation

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• A Data-constrained Magnetohydrodynamic Simulation of Successive X-class Flares in Solar Active Region 13842 I. Dynamics of the Solar Eruption Associated with the X7.1 Solar Flare
• Numerical Simulation of Solar Magnetic Flux Emergence Using the AMR--CESE--MHD Code
• The Role of a Tiny Brightening in a Huge Geo-effective Solar Eruption Leading to the St Patrick's Day Storm
• Formation and Eruption of a Mini-sigmoid Originating in Coronal Hole
• Synthetic radio views on simulated solar flux ropes
• Covert connection of filaments
• Can Multi-Threaded Flux Tubes in Coronal Arcades Support a Magnetohydrodynamic Avalanche?
• Are Decaying Magnetic Fields Above Active Regions Related to Coronal Mass Ejection Onset?
• Upward and downward catastrophes of coronal magnetic flux ropes in quadrupolar magnetic fields
• A Three-Dimensional Velocity of an Erupting Prominence Prior to a Coronal Mass Ejection
• The effect of data-driving and relaxation model on magnetic flux rope evolution and stability
• The initiation of a solar streamer blowout coronal mass ejection arising from the streamer flank
• Confinedness of an X3.1 class solar flare occurred in NOAA 12192: Analysis from multi-instruments observations
• Composition Comparison between ICMEs from Active Regions and Quiet-Sun Regions
• Tracing Field Lines That Are Reconnecting or Expanding or Both
• Observations of Photospheric Vortical Motions During the Early Stage of Filament Eruption
• The Kinematical Behavior of Solar Eruptive Filaments Affected by the Poloidal Magnetic Field
• A Data-constrained Magnetohydrodynamic Simulation of Successive X-class Flares in Solar Active Region 13842. II. Dynamics of the Solar Eruption Associated with the X9.0 Solar Flare
• Is there a Dynamic Difference between Stealthy and Standard CMEs?
• The Kinematics and Morphology of Solar Coronal Mass Ejections
• How flux feeding causes eruptions of solar magnetic flux ropes with the hyperbolic flux tube configuration?
• Eruption of the magnetic flux rope in a fast decayed active region
• Multi-wavelength view of an M2.2 Solar Flare on 26 November 2000
• Laboratory study of the failed torus mechanism in arched, line-tied, magnetic flux ropes
• Observational Comparison Between Confined and Eruptive Flares: Magnetohydrodynamics Instability Parameters in a Similar Magnetic Configuration
• Lateral Deformation of Large-scale Coronal Mass Ejections during the Transition from Non-radial to Radial Propagation
• Stereoscopic Observations of Solar X-ray Sources Explained by a Data-Constrained Magnetohydrodynamic Simulation
• Dynamics of solar Coronal Mass Ejections: forces that impact their propagation
• A Solar Eruption with Relatively Strong Geo-effectiveness Originating from Active Region Peripheral Diffusive Polarities
• Decipher the Three-Dimensional Magnetic Topology of a Great Solar Flare
• How does the critical torus instability height vary with the solar cycle?
• Multi-wavelength and Dual-perspective Observations of Eruption and Untwisting of Two Homologous Magnetic Flux Ropes
• Helicity shedding by flux rope ejection
• Formation and rising phase of a flux rope through data-constrained simulations
• Earth-affecting Solar Transients: A Review of Progresses in Solar Cycle 24
• Reconstructing Highly-twisted Magnetic Fields
• Multi-Viewpoint Observation of a Failed Prominence Eruption on the Sun
• Research progress based on observations of the New Vacuum Solar Telescope
• Formation and Immediate Deformation of a Small Filament Through Intermittent Magnetic Interactions
• Characterising Solar Magnetic Reconnection in Confined and Eruptive Flares
• Magnetohydrodynamics simulation of magnetic flux rope formation in a quadrupolar magnetic field configuration
• Filament eruption with apparent reshuffle of endpoints
• Propagation of Coronal Mass Ejections in the Inner Heliosphere
• Solar Energetic Particle Events with Short and Long Onset Times
• Stretch-Twist torus dynamo in compact Riemannian manifolds
• Aditya-L1 and SDO Observations of a Confined X-Class Flare with an EUV Late Phase: Thermal and Nonthermal Emission, Magnetic Topology, and Flux Rope Confinement
• A comparison of coronal mass ejection models with observations for two large CMEs detected during the Whole Heliosphere Interval
• Microwave Imaging Spectroscopy Diagnosis of the Slow-rise Precursor of a Major Solar Eruption
• Role of magnetic shear distribution on the formation of eruptive flux ropes
• Multi-scale Energy Release Events in the Quiet Sun: A Possible Source for Coronal Heating
• Why could a new-born active region produce coronal mass ejections?
• Polarization calibration of the Tandem Etalon Magnetograph of the Solar Magnetic Activity Research Telescope at Hida Observatory
• Extreme-ultraviolet Late Phase in Homologous Solar Flares from a Complex Active Region
• Small-scale Turbulent Motion of the Plasma in a Solar Filament as the Precursor of Eruption
• Data-constrained Magnetohydrodynamic Simulation of a Long Duration Eruptive Flare
• Investigation of a confined C-class flare in an arch filament system close to a regular sunspot
• Energy origination and triggering mechanism of a series of homologous confined flares
• Meteospace, a New Instrument for Solar Survey at the Calern Observatory
• Design of an adaptable Stokes polarimeter for exploring chromospheric magnetism