XMM follow-ups of rare AGN ignition and shut-down events detected with eROSITA

eROSITA is performing multiple allsky Xray surveys until 2023, and our team issystematically identifying rare accretion ignition/shutdown events changinglook AGN as they are transitioning. To track how the Xray corona,UV/optical accretion disk, and optical broadline region respond to a sudden,major change in accretion rate, we propose joint ToO observations of XMMNewton(EPIC+OM) and VLT (FORS2) to obtain at least two observations per triggeredobject (maximum of 4 ignition events and 4 shutdown events). We will constrainthe extent of these drastic flux changes and yield crucial constraints on howthe different structural AGN components respond to dramatic changes of theaccretion rate. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]