092347

The study of X-ray transients improves our understanding of the extreme physicalprocesses in the Universe. The newly launched EP-WXT pathfinder is a wide-fieldlobster-eye X-ray telescope in the 0.5-4 keV band which can perform skymonitoring in soft X-rays. With improved sensitivity of (3-4)E-11 erg/(cm2??s)it has the potential to discover new X-ray transients and variables. Follow-upobservations with large X-ray observatories are essential for sourceidentification localization and characterization. We propose an XMM-Newton ToOprogram to carry out follow-up observations for scientifically interesting newX-ray transients. This program will also provide experiences for futurefollow-ups from the EP satellite which has a much larger FoV of 3600 deg2 and is to be launched in 2023. [truncated! Please see actual data for full text]