Free Access

Fig. 1

thumbnail

a) A snapshot of the full 68′′ × 68′′ field-of-view captured through the Hα wideband filter. An expanded view of the flare region in Hαb) and Ca ii K core c) are also shown with sample positions for the time-distance slice method used in Sects. 3.1 and 3.2. A box is included in both image b) and c) to highlight one of the brightenings used to determine the horizontal bulk plasma velocities summarised in Table 1. A sample time-distance plot using the slice position indicated in c) is shown also d). The blue line shows the gradient used to establish the velocity.

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.