086504

X-ray emission from young stars is a crucial agent in the formation of planetary systems comma driving the chemistry and eventual dispersal of protoplanetary disks. K2.s 80-day monitoring of young stars in the Taurus star-forming region shows dramatic variability that points to changes in levels of accretion comma circumstellar absorption and magnetic activity on timescales of days to weeks. Similar variability is expected in X-rays comma causing important changes in the high-energy irradiation of planet-forming disks comma but is largely unexplored in X-rays. Therefore comma we propose the first large-scale X-ray monitoring campaign of well-characterized T Tauri stars with this cadence.