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Fast prograde coronal flows in solar active regions

Chamberlin, Phillip C.; Fletcher, Lyndsay; Mulay, Sargam M. +6 more

We report the discovery and characterization of high-speed (>100 km s^-1) horizontal flows in solar active regions, making use of the Sun-as-a-star spectroscopy in the range 5-105 nm provided by the EVE (Extreme Ultraviolet Variability Experiment) spectrometers on the Solar Dynamics Observatory. These apparent flows are persistent on …