Incoherent fast variability of X-ray obscurers - The case of NGC 3783 B. De Marco, T. P. Adhikari, G. Ponti, S. Bianchi, G. A. Kriss, N. Arav, E. Behar, G. Branduardi-Raymont, M. Cappi, E. Costantini et al. (15 more) A&A, 634 (2020) A65 Published online: 10 February 2020 DOI: 10.1051/0004-6361/201936470