Spectra of NGC 1365, showing X-ray occultations due to BLR clouds: (a) spectra obtained from three Chandra snapshot observations performed every two days [43]. The reflection-dominated spectrum in the second observation is due to an occultation by a Compton-thick cloud (the only one ever detected in short time scales). (b) Spectra obtained from different intervals (length of about 10ks) of a single Suzaku observation, revealing absorption changes due to a cloud with a column density of the order of 1023 cm−2.
