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DUDÍK, J. AULANIER, G. KAŠPAROVÁ, J. KARLICKÝ, M. ALENA ZEMANOVÁ, A. LÖRINČÍK, J. DRUCKMÜLLER, M.
Originální název
Filament Leg-Leg Reconnection as a Source of Prominent Supra-arcade Downflows
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
We report on the interaction of the legs of the erupting filament of 2012 August 31 and associated prominent supra-arcade downflows (P-SADs) as observed by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. We employ a number of image processing techniques to enhance weak interacting features. As the filament erupts, both legs stretch outwards. The positive-polarity leg also untwists and splits into two parts. The first part runs into the conjugate (negative-polarity) leg, tearing it apart. The second part then converges into the remnant of the conjugate leg, after which both weaken and finally disappear. All these episodes of interaction of oppositely oriented filament legs are followed by the appearance of P-SADs, seen in the on-disk projection to be shaped as loop tops, along with many weaker SADs. All SADs are preceded by hot supra-arcade downflowing loops. This observed evolution is consistent with the three-dimensional rr-rf (leg-leg) reconnection, where the erupting flux rope reconnects with itself. In our observations, as well as in some models, the reconnection in this geometry is found to be long lasting. It plays a substantial role in the evolution of the flux rope of the erupting filament and leads to prominent SADs.
Klíčová slova
MAGNETIC RECONNECTION
Autoři
DUDÍK, J.; AULANIER, G.; KAŠPAROVÁ, J.; KARLICKÝ, M.; ALENA ZEMANOVÁ, A.; LÖRINČÍK, J.; DRUCKMÜLLER, M.
Vydáno
1. 8. 2022
Nakladatel
IOP Publishing Ltd
Místo
BRISTOL
ISSN
2041-8213
Periodikum
Astrophysical Journal Letters
Ročník
937
Číslo
1
Stát
Spojené státy americké
Strany od
L10
Strany do
Strany počet
7
URL
https://iopscience.iop.org/article/10.3847/2041-8213/ac8eaf/pdf
BibTex
@article{BUT180027, author="Jaroslav {Dudík} and Guillaume {Aulanier} and Jana {Kašparová} and Marian {Karlický} and Alena Zemanová {Alena Zemanová} and Juraj {Lörinčík} and Miloslav {Druckmüller}", title="Filament Leg-Leg Reconnection as a Source of Prominent Supra-arcade Downflows", journal="Astrophysical Journal Letters", year="2022", volume="937", number="1", pages="7", doi="10.3847/2041-8213/ac8eaf", issn="2041-8213", url="https://iopscience.iop.org/article/10.3847/2041-8213/ac8eaf/pdf" }