Numerical simulations of kink instability in line-tied coronal Loops
UNSPECIFIED. (2001) Numerical simulations of kink instability in line-tied coronal Loops. ASTRONOMY & ASTROPHYSICS, 373 (3). pp. 1089-1098. ISSN 1432-0746Full text not available from this repository.
Official URL: http://dx.doi.org/10.1051/0004-6361:20010678
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|
|Subjects:||Q Science > QB Astronomy|
|Journal or Publication Title:||ASTRONOMY & ASTROPHYSICS|
|Publisher:||E D P SCIENCES|
|Number of Pages:||10|
|Page Range:||pp. 1089-1098|
Actions (login required)