Kinematical model of a circum-nuclear disk reproducing the observed H I absorption line. Left panel: Best-fit H I absorption generated by a disk in front of the radio continuum, overlaid with the observed line. Residuals are shown in the bottom panel. Right panel: Orientation of the H I disk generating the line in the left panel in the plane of the sky. The absorbed part of the disk is against the core and the southern jet is shown in green. The radio continuum is shown in the background. The colour scale shows the rotation velocity of the disk relative to systemic. The inclination and position angle of the disk best reproducing the observed H I are the same as those of the CO disk resolved by ALMA (see e.g. the zoomed-in image panel of Fig. 1 or Fig. 7 of Ruffa et al. 2019b).