Fig. C.1.

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Modelling result assuming plane-parallel surface disk. Left: Intrinsic brightness contrast as function of the asymmetric parameter g and the disk wall slope χ. Levels are indicated with solid lines with values. Right: Examples of simulated polarized disk images, with parameters g = 0.1 and χ = 45° in the upper panel and g = 0.1 and χ = 20° in the lower panel.
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