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| Paper: |
Direct Numerical Simulations of the Quasi-interchange Instability in Astrophysical Jets |
| Volume: |
453, Advances in Computational Astrophysics: Methods, Tools, and Outcome |
| Page: |
171 |
| Authors: |
Bonanno, A.; Urpin, V. |
| Abstract: |
We perform 3D numerical simulation of jets containing both the
azimuthal and axial field of subthermal strength.
We argue that in azimuthal and axial magnetic fields the jet is always
unstable to non-axisymmetric perturbations. Stabilization does not occur
even if the strengths of these field components are comparable.
If the axial field is weaker than the azimuthal one, instability occurs for
perturbations with any azimuthal wave number m, and the growth rate reaches
a saturation value for low values of m. If the axial field is stronger
than the toroidal one, the instability
shows up for perturbations with relatively high m. |
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