088377

QPEs are extreme soft X-ray bursts recurring on hours timescales associated to low-z galactic nuclei. Until a few months ago only two such sources were found and currently the only way of systematically finding new QPEs is provided by SRG/eROSITA. In AO19 we were able to discover in synergy with XMM-Newton two new QPEs. Thanks to this pilot study we are now confident in finding 3-4 good candidates every year. We plan to use 1-1.5yrs of eROSITA data to trigger XMM-Newton during AO20 therefore we ask for 4 ToO observations to be performed on 4 different candidates each with a length of 130 ks. By the end of AO20 this synergy can double the number of the now 4 known QPEs which will allow us to better understand and characterise these new and interesting phenomena. [truncated! Please see actual data for full text]