Jenkins, JM;
Long, DM;
van Driel-Gesztelyi, L;
Carlyle, J;
(2018)
Understanding the Role of Mass-Unloading in a Filament Eruption.
Solar Physics
, 293
, Article 7. 10.1007/s11207-017-1224-y.
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Abstract
We describe a partial filament eruption on 11 December 2011 that demonstrates that the inclusion of mass is an important next step for understanding solar eruptions. Observations from the Solar Terrestrial Relations Observatory-Behind (STEREO-B) and the Solar Dynamics Observatory (SDO) spacecraft were used to remove line-of-sight projection effects in filament motion and correlate the effect of plasma dynamics with the evolution of the filament height. Flux cancellation and nearby flux emergence are shown to have played a role in increasing the height of the filament prior to eruption. The two viewpoints allow the quantitative estimation of a large mass-unloading, the subsequent radial expansion, and the eruption of the filament to be investigated. A 1.8 to 4.1 lower-limit ratio between gravitational and magnetic-tension forces was found. We therefore conclude that following the loss-of-equilibrium of the flux-rope, the radial expansion of the flux-rope was restrained by the filamentary material until 70% of the mass had evacuated the structure through mass-unloading.
| Type: | Article |
|---|---|
| Title: | Understanding the Role of Mass-Unloading in a Filament Eruption |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s11207-017-1224-y |
| Publisher version: | https://doi.org/10.1007/s11207-017-1224-y |
| Language: | English |
| Additional information: | Copyright © The Author(s) 2018. Open Access: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
| Keywords: | Coronal mass ejections, initiation and propagation Prominence, quiescent Magnetic-fields, photosphere |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10042076 |
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