Plasma Outflows Within Polar Coronal Plumes

Plasma outflow velocities within polar coronal plumes and their contribution to the fast solar wind are a matter of controversy. We investigate the plasma dynamics within plumes through the analysis of high cadence and spatial resolution observations from the Solar Dynamic Observatory (SDO) jointly with STEREO and Hinode data. This analysis allows us to address the source of heating and plasma acceleration inside polar plumes and therefore obtain constraint on the contribution of plumes to the fast solar wind. Our results provide important constraints of theoretical model dealing with the formation and evolution of polar coronal plumes.