Talk Title: Variability in Planetary Debris Discs Around White Dwarfs Abstract: A significant fraction of white dwarfs host remnant planetary systems, signposted by dusty debris discs fed by the tidal disruption of a rocky planetesimal. Some also contain gas, indicating that these are dynamically active systems. Repeated observations of these gas discs show variations on … Continue reading December 08, 2017: Variability in Planetary Debris Discs Around White Dwarfs