Context. Obscuration events caused by outflowing clumps or streams of high column density
and low ionised gas, shown to absorb the X-ray continuum heavily, have been witnessed
across a number of Seyfert galaxies. Aims. We report on the X-ray spectral-timing analysis of
the December 2016 obscuration event in NGC 3783, which was aimed at probing variability
of the X-ray obscurer on the shortest possible timescales. The main goals of this study are to
obtain independent constraints on the density and, ultimately on the distance of the …

Context. Obscuration events caused by outflowing clumps or streams of high column
density, low ionisation gas, heavily absorbing the X-ray continuum, have been witnessed in
a number of Seyfert galaxies. Aims. We report on the X-ray spectral-timing analysis of the
December 2016 obscuration event in NGC 3783, aimed at probing variability of the X-ray
obscurer on the shortest possible timescales. The main goals of this study are to obtain
independent constraints on the density, and ultimately on the distance of the obscuring gas …