Free Access

Fig. 2

image

Continuum images at 08:57 UT (left) and 11:53 UT (right) superimposed with the white-light flare kernels derived from 30-mintime series of continuum images covering the X2.2 and X9.3 flares (see scale bar for the temporal evolution). The blue-colored overlays represent the 2D frequency distribution of pixels exhibiting strong UV excess brightenings with respect to the pre-flare phase. The boxes mark the locations of penumbral decay (A – C) and umbral strengthening (D).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.