Gerrard, C. L., Arber, T. D., Hood, Alan W. and Linden, R. A. M. van der (2001) Numerical simulations of kink instability in line-tied coronal loops. Astronomy & Astrophysics, Vol.373 (No.3). pp. 1089-1098. doi:10.1051/0004-6361:20010678

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Abstract

The results from numerical simulations carried out using a new shock-capturing, Lagrangian-remap, 3D MHD code, Lare3d are presented. We study the evolution of the m=1 kink mode instability in a photospherically line-tied coronal loop that has no net axial current. During the non-linear evolution of the kink instability, large current concentrations develop in the neighbourhood of the infinite length mode rational surface. We investigate whether this strong current saturates at a finite value or whether scaling indicates current sheet formation. In particular, we consider the effect of the shear, defined by where is the fieldline twist of the loop, on the current concentration. We also include a non-uniform resistivity in the simulations and observe the amount of free magnetic energy released by magnetic reconnection.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Sun -- Corona -- Mathematical models, Sun -- Loop prominences -- Mathematical models, Magnetohydrodynamics
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	July 2001
Dates:	Date Event July 2001 Published
Volume:	Vol.373
Number:	No.3
Page Range:	pp. 1089-1098
DOI:	10.1051/0004-6361:20010678
Status:	Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Higher Education Funding Council for England (HEFCE), Scottish Higher Education Funding Council (SHEFC)

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