We present the results of the latest NuSTAR monitoring campaign of the Compton-thick Seyfert 2 galaxy NGC 1068 , composed of four \sim 50 ks observations performed between July 2017 and February 2018 to search for flux and spectral variability on timescales from 1 to 6 months .
We detect one unveiling and one eclipsing event with timescales less than 27 and 91 days , respectively , ascribed to Compton-thick material with N _ { H } = ( 1.8 \pm 0.8 ) \times 10 ^ { 24 } cm ^ { -2 } and N _ { H } \geq ( 2.4 \pm 0.5 ) \times 10 ^ { 24 } cm ^ { -2 } moving across our line of sight .
This gas is likely located in the innermost part of the torus or even further inward , thus providing further evidence of the clumpy structure of the circumnuclear matter in this source .
Taking advantage of simultaneous Swift -XRT observations , we also detected a new flaring ULX , at a distance d \sim 30 " ( i.e . \sim 2 kpc ) from the nuclear region of NGC 1068 , with a peak X-ray intrinsic luminosity of ( 3.0 \pm 0.4 ) \times 10 ^ { 40 } erg s ^ { -1 } in the 2-10 keV band .