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Observations and 3D Magnetohydrodynamic Modeling of a Confined Helical Jet Launched by a Filament Eruption

Doyle, Lauren; Wyper, Peter F.; Scullion, Eamon; McLaughlin, James A.; Ramsay, Gavin; Doyle, J. Gerard

Observations and 3D Magnetohydrodynamic Modeling of a Confined Helical Jet Launched by a Filament Eruption Thumbnail


Authors

Lauren Doyle

Eamon Scullion

James A. McLaughlin

Gavin Ramsay

J. Gerard Doyle



Abstract

We present a detailed analysis of a confined filament eruption and jet associated with a C1.5 class solar flare. Multiwavelength observations from the Global Oscillations Network Group and Solar Dynamics Observatory reveal the filament forming over several days following the emergence and then partial cancellation of a minority polarity spot within a decaying bipolar active region. The emergence is also associated with the formation of a 3D null point separatrix that surrounds the minority polarity. The filament eruption occurs concurrently with brightenings adjacent to and below the filament, suggestive of breakout and flare reconnection, respectively. The erupting filament material becomes partially transferred into a strong outflow jet (∼60 km s−1 ) along coronal loops, becoming guided back toward the surface. Utilizing high-resolution Hα observations from the Swedish Solar Telescope/CRisp Imaging SpectroPolarimeter, we construct velocity maps of the outflows, demonstrating their highly structured but broadly helical nature. We contrast the observations with a 3D magnetohydrodynamic simulation of a breakout jet in a closed-field background and find close qualitative agreement. We conclude that the suggested model provides an intuitive mechanism for transferring twist/helicity in confined filament eruptions, thus validating the applicability of the breakout model not only to jets and coronal mass ejections but also to confined eruptions and flares.

Citation

Doyle, L., Wyper, P. F., Scullion, E., McLaughlin, J. A., Ramsay, G., & Doyle, J. G. (2019). Observations and 3D Magnetohydrodynamic Modeling of a Confined Helical Jet Launched by a Filament Eruption. Astrophysical Journal, 887(2), Article 246. https://doi.org/10.3847/1538-4357/ab5d39

Journal Article Type Article
Acceptance Date Nov 26, 2019
Online Publication Date Dec 26, 2019
Publication Date Dec 20, 2019
Deposit Date Jan 15, 2020
Publicly Available Date Mar 28, 2024
Journal Astrophysical Journal
Print ISSN 0004-637X
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 887
Issue 2
Article Number 246
DOI https://doi.org/10.3847/1538-4357/ab5d39

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