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Since the launch of NASA's Solar Dynamics Observatory on 2010 February 11,the Extreme ultraviolet Variability Experiment (EVE) has observed numerousflares. One interesting feature observed by EVE is that a subset of flaresexhibit an additional enhancement of the 2-3 million K emission several hoursafter the flare's soft X-ray emission. From the Atmospheric Imaging Assembly(AIA) images, we observe that this secondary emission, dubbed the EUV latephase, occurs in the same active region as the flare but not in the samecoronal loops. Here, we examine the C8.8 flare that occurred on 2010 May 5 as acase study of EUV late phase flares. In addition to presenting detailedobservations from both AIA and EVE, we develop a physical model of this flareand test it using the Enthalpy Based Thermal Evolution of Loops (EBTEL) model.

The Origin of the EUV Late Phase: A Case Study of the C8.8 Flare on 2010 May 5