Filament eruption with apparent reshuffle of endpoints
arXiv:1405.5784 · doi:10.1093/mnras/stu1021
Abstract
Filament eruption on 30 April - 1 May 2010, which shows the reconnection of one filament leg with a region far away from its initial position, is analyzed. Observations from three viewpoints are used for as precise as possible measurements of endpoint coordinates. The northern leg of the erupting prominence loop 'jumps' laterally to the latitude lower than the latitude of the originally southern endpoint. Thus, the endpoints reshuffled their positions in the limb view. Although this behaviour could be interpreted as the asymmetric zipping-like eruption, it does not look very likely. It seems more likely to be reconnection of the flux-rope field lines in its northern leg with ambient coronal magnetic field lines rooted in a quiet region far from the filament. From calculations of coronal potential magnetic field, we found that the filament before the eruption was stable for vertical displacements, but was liable to violation of the horizontal equilibrium. This is unusual initiation of an eruption with combination of initial horizontal and vertical flux-rope displacements showing a new unexpected possibility for the start of an eruptive event.
arXiv comment9 pages, 11 figures Accepted in MNRAS
References in corpus (18)
- A Model for Solar Coronal Mass Ejections
- Torus instability
- Criteria for Flux Rope Eruption: Non Equilibrium versus Torus Instability
- Eruption of a Kink-Unstable Filament in Active Region NOAA 10696
- Numerical simulations of fast and slow coronal mass ejections
- Solar filament eruptions and their physical role in triggering Coronal Mass Ejections
- The SWAP EUV Imaging Telescope Part I: Instrument Overview and Pre-Flight Testing
- Observations and modeling of the early acceleration phase of erupting filaments involved in coronal mass ejections
- Numerical Investigation of a Coronal Mass Ejection from an Anemone Active Region: Reconnection and Deflection of the 2005 August 22 Eruption
- The SWAP EUV Imaging Telescope. Part II: In-flight Performance and Calibration
- A Non-radial Eruption in a Quadrupolar Magnetic Configuration with a Coronal Null
- Break up of returning plasma after the 7 June 2011 filament eruption by Rayleigh-Taylor instabilities
- Absorption Phenomena and a Probable Blast Wave in the 13 July 2004 Eruptive Event
- Partially-erupting prominences: a comparison between observations and model-predicted observables
- Energy release from impacting prominence material following the 2011 June 7 eruption
- Investigating the Dynamics and Density Evolution of Returning Plasma Blobs from the 2011 June 7 Eruption
- Filament eruption on 2010 October 21 from three viewpoints
- Evidence For Mixed Helicity in Erupting Filaments