Linear Analysis of Axial Sheared Flow in Astrophysical Jets |
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| Authors: | Lucas F Wanex |
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| Institution: | (1) University of Nevada, Reno |
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| Abstract: | A linear analysis of axial sheared flow in magnetohydrodynamic (MHD) jets with helical magnetic fields is presented. A linearized
set of ideal MHD equations allows the investigation of plasmas with both magnetic shear and flow shear included in the equilibrium
profile. These equations are integrated numerically by following the linear development in time of an initial seed perturbation.
Global instability growth rates are obtained after the numerical solution converges to the fastest growing mode. It is shown
that axial sheared flow reduces the growth of current-driven instabilities in plasma jets with constant magnetic pitch P = rB
z
/B
θ. |
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| Keywords: | astrophysical jets linear analysis axial sheared flow |
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