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Numerical simulations of kink instability in line-tied coronal Loops
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UNSPECIFIED (2001) Numerical simulations of kink instability in line-tied coronal Loops. ASTRONOMY & ASTROPHYSICS, 373 (3). pp. 1089-1098. doi:10.1051/0004-6361:20010678 ISSN 1432-0746.
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Official URL: http://dx.doi.org/10.1051/0004-6361:20010678
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 r phi'/phi where phi = LBtheta/rB(z) 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 | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Journal or Publication Title: | ASTRONOMY & ASTROPHYSICS | ||||
Publisher: | E D P SCIENCES | ||||
ISSN: | 1432-0746 | ||||
Official Date: | July 2001 | ||||
Dates: |
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Volume: | 373 | ||||
Number: | 3 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 1089-1098 | ||||
DOI: | 10.1051/0004-6361:20010678 | ||||
Publication Status: | Published |
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