088062

Based on a dedicated XMM-Newton monitoring campaign started in 2015 we have recently revealed an X-ray activity cycle on the young solar-like star epsilon Eri. From 2014 - 2017 the X-ray and the CaII emission of eps Eri changed in a synchronized way with the 3-yr period of the Ca S-index that dominated the chromospheric variability of the star for the last two decades. Then in 2018 a drastic change set in: Both the S-index and the X-ray emission appear to have switched to a lower average activity level and whether X-ray and CaII emission are still cyclic and in phase is unclear. We propose to examine the long-term evolution of eps Eri.s X-ray cycle during an important change in its activity state with continued monitoring for 2 x 5 ks. [truncated! Please see actual data for full text]