Amplification of MHD waves in swirling astrophysical flows

Abstract

Recently it was found that helical magnetized flows efficiently amplify Alfvén waves (Rogava et al. 2003). This robust and manifold nonmodal effect was found to involve regimes of transient algebraic growth (for purely ejectional flows), and exponential instabilities of both usual and parametric nature. However the study was made in the incompressible limit… (More)

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