Modeled NIR image in the H-band (λ_H = 1.62 µm of the shadow-driven (above) and planet-driven (below) spiral cases. In each panel, the location of the planet is identified with a white dot, and an Archimedian spiral fit is shown as gray dashed lines. The beam is indicated with a gray hatched ellipse, while the effect of a coronagraph is mimicked by the black circle 20 au (0.2^′′) in radius. The standard planetary Lindblad spirals are weakened in the disk atmosphere (traced by NIR scattering off the entrained dust grains) by wave refraction at the temperature transition corresponding to the disk’s τ_r = 1 surface.