XMM-Newton - NuSTAR monitoring campaign of the Seyfert 1 galaxy IC 4329A

We present the results of a joint and campaign on the active galactic nucleus (AGN) IC 4329A, consisting of 9 times 20\,ks observations, and 5 times 20\,ks observations within nine days, performed in August 2021. Within each observation, the AGN is not very variable, and the fractional variability never exceeds 5. Flux variations are observed between the different observations on timescales of days, with a ratio of 30 of the minimum and maximum 2--10\,keV flux. These variations follow the softer-when-brighter behavior typically observed in AGN. In all observations, a soft excess is clearly present. Consistently with previous observations, the X-ray spectra of the source exhibit a cutoff energy between 140 and 250\,keV that is constant within the error in the different observations. We detected a prominent component of the $6.4$\,keV Fe Kalpha line consistent with being constant during the monitoring, consisting of an unresolved narrow core and a broader component likely originating in the inner accredion disk. We find that the reflection component is weak max and most likely originates in distant neutral medium. We also found a warm absorber component together with an ultrafast outflow. Their energetics show that these outflows have enough mechanical power for significant feedback on the environment of the AGN.