On the partial eruption of a bifurcated solar filament structure
arXiv:2009.08619 · doi:10.1093/mnras/staa2902
Abstract
The partial eruption of a filament channel with bifurcated substructures is investigated using datasets obtained from both ground-based and space-borne facilities. Small-scale flux reconnection/cancellation events in the region triggered the pile-up of ambient magnetic field, observed as bright EUV loops in close proximity of the filament channel. This led to the formation of a V-shaped cusp structure at the site of interaction between the coalesced EUV loops and the filament channel, with the presence of distinct plasmoid structures and associated bidirectional flows. Analysis of imaging data from SDO/AIA further suggests the vertical split of the filament structure into two substructures. The perturbed upper branch of the filament structure rose up and erupted with the onset of an energetic GOES M1.4 flare at 04:30 UT on January 28, 2015. The estimated twist number and squashing factor obtained from nonlinear force free-field extrapolation of the magnetic field data support the vertical split in filament structure with high twist in upper substructure. The loss in equilibrium of the upper branch due to torus instability, implying this as a potential triggering mechanism of the observed partial eruption.
arXiv commentAccepted for Publication in MNRAS
References in corpus (32)
- Torus instability
- Confined and ejective eruptions of kink-unstable flux ropes
- The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs -- Space-weather HMI Active Region Patches
- Physics of Solar Prominences: II - Magnetic Structure and Dynamics
- Optimization code with weighting function for the reconstruction of coronal magnetic fields
- Differential Emission Measures from the Regularized Inversion of Hinode and SDO data
- Structure, Stability, and Evolution of Magnetic Flux Ropes from the Perspective of Magnetic Twist
- Imaging coronal magnetic-field reconnection in a solar flare
- The origin, early evolution and predictability of solar eruptions
- Simultaneous Observation of Reconnection Inflow and Outflow Associated with the 2010 August 18 Solar Flare
- Slow Rise and Partial Eruption of a Double-Decker Filament. I Observations and Interpretation
- Formation of a Double-decker Magnetic Flux Rope in the Sigmoidal Solar Active Region 11520
- Magnetic reconnection between a solar filament and nearby coronal loops
- Formation of Magnetic Flux Ropes during Confined Flaring Well Before the Onset of a Pair of Major Coronal Mass Ejections
- Slow Rise and Partial Eruption of a Double-Decker Filament. II. Modeling by a Double Flux Rope Equilibrium
- Eruption of a multi-flux-rope system in solar active region 12673 leading to the two largest flares in Solar Cycle 24
- A Time Series of Filament Eruptions Observed by Three Eyes from Space: From Failed to Successful Eruptions
- The Birth of A Coronal Mass Ejection
- Partially-erupting prominences: a comparison between observations and model-predicted observables
- Pre-Eruptive Magnetic Reconnection within a Multi-Flux-Rope System in the Solar Corona
- Double-Decker Filament Configuration Revealed by Mass Motions
- Unambiguous Evidence of Filament Splitting-Induced Partial Eruptions
- A Prominence Eruption Driven by Flux Feeding from Chromospheric Fibrils
- Complex Flare Dynamics Initiated by a Filament-Filament Interaction
- Multi-Wavelength Observations of a Flux Rope Failed in the Eruption and Associated M-Class Flare from NOAA AR 11045
- A Study of a Compound Solar Eruption with Two Consecutive Erupting Magnetic Structures
- Sequential eruptions triggered by flux emergence - observations and modeling
- Magnetic Flux Rope Shredding by a Hyperbolic Flux Tube: The Detrimental Effects of Magnetic Topology on Solar Eruptions
- Magnetohydrodynamic modeling of solar coronal dynamics with an initial non-force-free magnetic field
- Disintegration of an Eruptive Filament via Interactions with Quasi-Separatrix Layers
- The Role of a Tiny Brightening in a Huge Geo-effective Solar Eruption Leading to the St Patrick's Day Storm
- Pre-eruption Oscillations in Thin and Long Features in a Quiescent Filament