Flux rope formation due to shearing and zipper reconnection

J. Threlfall; A. W. Hood; E. R. Priest

doi:10.1007/s11207-018-1318-1

Flux rope formation due to shearing and zipper reconnection

J. Threlfall^*, A. W. Hood, E. R. Priest

^*Corresponding author for this work

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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Abstract

Zipper reconnection has been proposed as a mechanism for creating most of the twist in the flux tubes that are present {prior to} eruptive flares and coronal mass ejections. We have conducted a first numerical experiment on this new regime of reconnection, where two initially untwisted parallel flux tubes are sheared and reconnected to form a large flux rope. We describe the properties of this experiment, including the linkage of magnetic flux between concentrated flux sources at the base of the simulation, the twist of the newly formed flux rope and the conversion of mutual magnetic helicity in the sheared pre-reconnection state into the self-helicity of the newly formed flux rope.

Original language	English
Article number	98
Number of pages	17
Journal	Solar Physics
Volume	293
Issue number	6
Early online date	28 Jun 2018
DOIs	https://doi.org/10.1007/s11207-018-1318-1
Publication status	Published - Jun 2018

Keywords

Magnetic reconnection, observational signatures
Magnetic reconnection, theory
Magnetic fields, corona
Flares, relation to magnetic field

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10.1007/s11207-018-1318-1Licence: CC BY

Threlfall-2018-Flux-rope-SolarPhys-98
© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Final published version, 2.52 MBLicence: CC BY

Solar and Magnetospheric - Consolidated: Solar and Magnetospheric Magnetohydrodynamics and Plasmas: Theory and Application
Hood, A. W. (PI), Archontis, V. (CoI), De Moortel, I. (CoI), Mackay, D. H. (CoI), Neukirch, T. (CoI), Parnell, C. E. (CoI) & Wright, A. N. (CoI)
Science & Technology Facilities Council
1/04/16 → 31/03/19
Project: Standard
Local Coronal Dynamics: Local Coronal Dynamics
Hood, A. W. (PI), De Moortel, I. (CoI), Parnell, C. E. (CoI) & Priest, E. (CoI)
1/11/13 → 31/03/15
Project: Standard

Data underpinning: Flux Rope Formation Due to Shearing and Zipper Reconnection
Threlfall, J. W. (Creator), Hood, A. W. (Creator) & Priest, E. R. (Contributor), University of St Andrews, 28 Jun 2018
DOI: 10.17630/dea50f38-7aff-48c3-b090-c689d02dd305, https://warwick.ac.uk/fac/sci/physics/research/cfsa/people/tda/larexd/
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File

Cite this

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title = "Flux rope formation due to shearing and zipper reconnection",

abstract = "Zipper reconnection has been proposed as a mechanism for creating most of the twist in the flux tubes that are present {prior to} eruptive flares and coronal mass ejections. We have conducted a first numerical experiment on this new regime of reconnection, where two initially untwisted parallel flux tubes are sheared and reconnected to form a large flux rope. We describe the properties of this experiment, including the linkage of magnetic flux between concentrated flux sources at the base of the simulation, the twist of the newly formed flux rope and the conversion of mutual magnetic helicity in the sheared pre-reconnection state into the self-helicity of the newly formed flux rope.",

keywords = "Magnetic reconnection, observational signatures, Magnetic reconnection, theory, Magnetic fields, corona, Flares, relation to magnetic field",

author = "J. Threlfall and Hood, {A. W.} and Priest, {E. R.}",

note = "The authors acknowledge the financial support of STFC through the Consolidated grant, ST/N000609/1, to the University of St Andrews. These systems are operated on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). The equipment was funded by BIS National E-infrastructure capital grants (ST/K00042X/1 and ST/K001590/1), STFC capital grants (ST/K00087X/1, ST/H008861/1 and ST/H00887X/1) and DiRAC Operations grants (ST/K003267/1 and ST/K00333X/1). The research data supporting this publication can be accessed at http://dx.doi.org/10.17630/dea50f38-7aff-48c3-b090-c689d02dd305.",

year = "2018",

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doi = "10.1007/s11207-018-1318-1",

language = "English",

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T1 - Flux rope formation due to shearing and zipper reconnection

AU - Threlfall, J.

AU - Hood, A. W.

AU - Priest, E. R.

N1 - The authors acknowledge the financial support of STFC through the Consolidated grant, ST/N000609/1, to the University of St Andrews. These systems are operated on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). The equipment was funded by BIS National E-infrastructure capital grants (ST/K00042X/1 and ST/K001590/1), STFC capital grants (ST/K00087X/1, ST/H008861/1 and ST/H00887X/1) and DiRAC Operations grants (ST/K003267/1 and ST/K00333X/1). The research data supporting this publication can be accessed at http://dx.doi.org/10.17630/dea50f38-7aff-48c3-b090-c689d02dd305.

PY - 2018/6

Y1 - 2018/6

N2 - Zipper reconnection has been proposed as a mechanism for creating most of the twist in the flux tubes that are present {prior to} eruptive flares and coronal mass ejections. We have conducted a first numerical experiment on this new regime of reconnection, where two initially untwisted parallel flux tubes are sheared and reconnected to form a large flux rope. We describe the properties of this experiment, including the linkage of magnetic flux between concentrated flux sources at the base of the simulation, the twist of the newly formed flux rope and the conversion of mutual magnetic helicity in the sheared pre-reconnection state into the self-helicity of the newly formed flux rope.

AB - Zipper reconnection has been proposed as a mechanism for creating most of the twist in the flux tubes that are present {prior to} eruptive flares and coronal mass ejections. We have conducted a first numerical experiment on this new regime of reconnection, where two initially untwisted parallel flux tubes are sheared and reconnected to form a large flux rope. We describe the properties of this experiment, including the linkage of magnetic flux between concentrated flux sources at the base of the simulation, the twist of the newly formed flux rope and the conversion of mutual magnetic helicity in the sheared pre-reconnection state into the self-helicity of the newly formed flux rope.

KW - Magnetic reconnection, observational signatures

KW - Magnetic reconnection, theory

KW - Magnetic fields, corona

KW - Flares, relation to magnetic field

U2 - 10.1007/s11207-018-1318-1

DO - 10.1007/s11207-018-1318-1

M3 - Article

SN - 0038-0938

VL - 293

JO - Solar Physics

JF - Solar Physics

IS - 6

M1 - 98

ER -

Flux rope formation due to shearing and zipper reconnection

Abstract

Keywords

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Projects

Solar and Magnetospheric - Consolidated: Solar and Magnetospheric Magnetohydrodynamics and Plasmas: Theory and Application

Local Coronal Dynamics: Local Coronal Dynamics

Datasets

Data underpinning: Flux Rope Formation Due to Shearing and Zipper Reconnection

Cite this