Results from the RENU2 Sounding Rocket: Fine Scale Drivers and Ionospheric Response in the Cusp during a Poleward Moving Auroral Form

Poleward Moving Auroral Forms (PMAFs) consist of groupings of auroral arcs which exhibit a high degree of spatial and temporal structuring as they drift across a region spanning several hundred kilometers. Data from the Rocket Experiment for Neutral Upwelling (RENU2) are presented which demonstrates this structure to very high temporal and spatial resolution — on the order of milliseconds and tens of meters. In-situ wave and particle data show energy inputs on the order of several mW/m^2 occurring within the PMAF localized to sub-100m regions for time scales on the orders of tenths of seconds or less. Wave-particle interactions are investigated for their contribution to the high degree of fine-scale structuring. Finally, data are presented which characterize the ionospheric response to these energy inputs showing coupling to very large spatial and temporal scales.