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We discuss preliminary results from a joint XMM‐ Newton  and NuSTAR monitoring program on the active galactic nucleus NGC 4593, consisting of 5×20 ks observations, spaced by two days, performed in January 2015. The source is found to be variable, both in flux and spectral shape, on time scales as short as a few ks. The spectrum clearly softens when the source brightens. A simple timing analysis suggests the presence of a variable soft excess that correlates with the primary continuum. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

High‐energy monitoring of Seyfert galaxies: The case of NGC 4593