Spectra of the H 2 1–0 S(1) line, centred at the systemic velocity of PKS B1718–649. Spectra are extracted along the line of sight to the radio source (black) and on a region on the east (red) and on the west (blue) of the inner disk, at 0.75′′ from the centre. Only the spectrum in front of the radio source appears broader and redshifted.
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