086323

Our group recently witnessed the destruction and recreation of the X-ray corona in a nearby changing-look AGN. This source underwent an optical-UV outburst after which the X-ray power-law comma ubiquitously detected in AGN comma completely disappeared. Our monitoring revealed that a few months after the event comma as the luminosity of the source increased comma the corona re-appeared. The X-ray source is however still very cool and optically thin comma and it might fully reform in the next months. We propose here several XMM-Newton-NuSTAR observations to monitor the reappearance of the hard component and the evolution of the plasma properties. The proposed observations provide a unique opportunity to study the creation of the X-ray corona comma as well as to understand changing-look transitions