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An sdo/aia-observed filament eruption triggered by a lid-removal onset mechanism
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sterling, Alphonse C. Moore, Ronald L. Falconer, David A. |
| Copyright Year | 2013 |
| Description | An eruption of a solar filament often presages the onset of a more general solar eruption, often leading to a solar flare and coronal mass ejection (CME). Among the mechanisms suggested for triggering eruptions are flux cancellation, flux emergence, tetherâcutting reconnection, and breakout reconnection. Here we present an example of a filament eruption due to a different trigger mechanism, which we call ``lid removal,'' whereby a magnetic structure overlying the filament is removed by a preceding adjacent eruption, rendering MHD unstable the magnetic system containing the filament and resulting in the subsequent eruption of the filament. This filament eruption occurred on 23 Jan 2013, and was wellâseen in SDO/AIA 193 Ang images. Prior to its eruption the filament was at an approximately constant height above the solar surface for approx. 4 hours, before smoothly lifting off. Evidence for the overlying "lid'' field was difficult to discern in 193 Ang images, but was apparent in hotter coronal images, such as SDO/AIA 335. Removal of the lid field was due to an eruption of that field visible in the hotterâcorona images. In this way, the lidâremoval filamentâeruption mechanism is similar to recent observations of connected or cascading eruptions originating from magneticallyâlinked locations. |
| File Size | 78087 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140006423 |
| Archival Resource Key | ark:/13960/t6935tt58 |
| Language | English |
| Publisher Date | 2013-12-09 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Magnetic Flux Solar Corona Solar Flares Coronal Mass Ejection Magnetic Field Reconnection Solar Magnetic Field Solar Observatories Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
