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Plasmoids, Flows, and Jets during Magnetic Reconnection in a Failed Solar Eruption

Kumar, Pankaj; T. Karpen, Judith; Antiochos, Spiro K.; DeVore, C. Richard; Wyper, Peter F.; Cho, Kyung-Suk

Plasmoids, Flows, and Jets during Magnetic Reconnection in a Failed Solar Eruption Thumbnail


Pankaj Kumar

Judith T. Karpen

Spiro K. Antiochos

C. Richard DeVore

Kyung-Suk Cho


We report a detailed analysis of a failed eruption and flare in active region 12018 on 2014 April 3 using multiwavelength observations from the Solar Dynamics Observatory/Atmospheric Imaging Assembly, IRIS, STEREO, and Hinode/Solar Optical Telescope. At least four jets were observed to emanate from the cusp of this small active region (large bright point) with a null-point topology during the 2 hr prior to the slow rise of a filament. During the filament slow rise multiple plasma blobs were seen, most likely formed in a null-point current sheet near the cusp. The subsequent filament eruption, which was outside the IRIS field of view, was accompanied by a flare but remained confined. During the explosive flare reconnection phase, additional blobs appeared repetitively and moved bidirectionally within the flaring region below the erupting filament. The filament kinked, rotated, and underwent leg–leg reconnection as it rose, yet it failed to produce a coronal mass ejection. Tiny jet-like features in the fan loops were detected during the filament slow rise/preflare phase. We interpret them as signatures of reconnection between the ambient magnetic field and the plasmoids leaving the null-point sheet and streaming along the fan loops. We contrast our interpretation of these tiny jets, which occur within the large-scale context of a failed filament eruption, with the local nanoflare-heating scenario proposed by Antolin et al.


Kumar, P., T. Karpen, J., Antiochos, S. K., DeVore, C. R., Wyper, P. F., & Cho, K. (2023). Plasmoids, Flows, and Jets during Magnetic Reconnection in a Failed Solar Eruption. Astrophysical Journal, 943(2), Article 156.

Journal Article Type Article
Acceptance Date Dec 20, 2022
Online Publication Date Feb 6, 2023
Publication Date Feb 1, 2023
Deposit Date Feb 9, 2023
Publicly Available Date Feb 13, 2023
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 943
Issue 2
Article Number 156


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Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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