Extreme Nuclear Transients in PanSTARRS

I will first introduce the PanSTARRS telescope and surveys, and summarise the products that will soon become public through the STScI MAST interface. I will then describe our studies of nuclear transients. These were originally aimed at finding Tidal Disruption events, and we have some spectacular candidate events. However, we also discovered an unexpected new class of slow-blue transients - AGN at z~1 flaring  by an order of magnitude over a timescale of years. These are very unlikely to be tidal disruptions or accretion flares. I consider the case for these events representing high amplitude microlensing events, and discuss their potential for diagnosing the structure of the accretion disc and the broad line region."