The universal shape of the X-ray variability power spectrum of AGN up to z ∼ 3 M. Paolillo, I. E. Papadakis, W. N. Brandt, F. E. Bauer, G. Lanzuisi, V. Allevato, O. Shemmer, X. C. Zheng, D. De Cicco, R. Gilli et al. (5 more) A&A, 673 (2023) A68 Published online: 08 May 2023 DOI: 10.1051/0004-6361/202245291