Linear and Nonlinear Kelvin–Helmholtz Instability and Magnetohydrodynamic Wave Emission in Sheared Astrophysical Plasma Flows

Abstract The evolution of the Kelvin–Helmholtz instability (KHI) and magnetohydrodynamic (MHD) wave emission is investigated at shear-flow boundaries magnetized plasmas. While MHD has been suggested to be only possible during nonlinear stages, we find that there also significant KHI’s linear stages. These emitted waves may have stronger impacts than KHI surface since they can act transport energy away from local region shear flow. removal region, instead just redistribution considered in previous studies, its propagation interface could major implications for astrophysical objects characterized by fast plasma flow shears.