Manifestations of Three-dimensional Magnetic Reconnection in an Eruption of a Quiescent Filament: Filament Strands Turning to Flare Loops

0520552 - ASÚ 2020 RIV US eng J - Journal Article
Lörinčík, Juraj - Dudík, Jaroslav - Aulanier, G.
Manifestations of Three-dimensional Magnetic Reconnection in an Eruption of a Quiescent Filament: Filament Strands Turning to Flare Loops.
Astrophysical Journal. Roč. 885, č. 1 (2019), č. článku 83. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA17-16447S
Institutional support: RVO:67985815
Keywords : magnetic reconnection * coronal mass ejections * Sun flares
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.746, year: 2019
Method of publishing: Limited access
https://doi.org/10.3847/1538-4357/ab4519

We report on observations of the conversion of bright filament strands into flare loops during the 2012 August 31 filament eruption. Prior to the eruption, individual bright strands composing one of the legs of the filament were observed in the 171 ? filter channel data of the Atmospheric Imaging Assembly. After the onset of the eruption, one of the hooked ribbons started to propagate and contract, sweeping footpoints of the bright filament strands as well as coronal loops located close by. Later on, hot flare loops appeared in regions swept by the hook, where the filament strands were rooted. Timing and localization of these phenomena suggest that they are caused by reconnection of field lines composing the filament at the hook, which, to our knowledge, has not been observed before. This process is not included in the standard flare model (CSHKP), as it does not address footpoints of erupting flux ropes and ribbon hooks.
Permanent Link: http://hdl.handle.net/11104/0305212