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We numerically follow the response of density-enhanced slabs to impulsive,localized, transverse velocity perturbations by working in the framework ofideal magnetohydrodynamics (MHD). Both linear and nonlinear regimes areaddressed. Kink wave trains are seen to develop along the examined slabs,sharing the characteristics that more oscillatory patterns emerge with time andthat the apparent wavelength increases with distance at a given instant. Twofeatures nonetheless arise due to nonlinearity, one being a density cavityclose to the exciter and the other being the appearance of shocks both outsideand inside the nominal slab. These features may be relevant for understandingthe interaction between magnetic structures and such explosive events ascoronal mass ejections. Our numerical findings on kink wave trains in solarcoronal slabs are discussed in connection with typical measurements of streamerwaves.

Impulsively Generated Kink Wave Trains in Solar Coronal Slabs