Example of the perturbation of an accretion column by nearby flaring activity. The figure shows snapshots displaying isosurfaces where the particle number density equals 5 × 10⁹ cm⁻³ in run FL-REF. We show the southern pole-on view of the star. The isosurfaces, which coincide with the cold and dense disk material, are shown at the labeled times (upper left corner of each panel). The colors give the pressure (in units of dyn cm⁻²) on the isosurface, and the color-coding is defined on the right of each panel. Upper panel: red arrow points at flare that perturbs the accretion column (see high-pressure region in the disk). Middle and lower panel: red arrow points at the portion of the disk material that perturbs the accretion column.