Left: polarized intensity observation of GG Tau A in near-infrared (H-Band) with Subaru/HiCIAO (Yang et al. 2017). The uncalibrated observation was fit visually to the simulated emission maps by assuming a linear photon count. Right: polarized intensity map of GG Tau A that is simulated at λ = 1.65 μm. The image isconvolved with a Gaussian beam of 0.07′′ ×0.07′′ to take the resolution of the Subaru/HiCIAO telescope into account. The model consists of disks around Aa and Ab1 in the same plane as the circumbinary disk and a disk around Ab2 that is inclined by 90 ° with a position angle of the rotation axis of 270° (see Fig. 2). An increased grid resolution and sightly larger scale height of the CS disk around Aa was required to achieve the sharp western shadow.