The target of these observations was active region 10998, containing a leading sunspot with a rudimentary penumbra and following plages. The active region was observed on 2008 June 11 using the CRISP instrument at the Swedish 1-m Solar Telescope on La Palma (Canary Islands, Spain).
Ellerman bombs are brightenings in the H-alpha line that mark magnetic reconnection in the deep solar atmosphere. When viewed from the side away from disk center and at high spatial resolution, Ellerman bombs are flame-like structures that stick out vertically from the inter granular lanes. At high temporal resolution, it is clear that Ellerman Bombs are highly dynamic and show variability on a time scale of seconds.
The top panel of the movie shows images taken with the CRISP H-alpha prefilter, a wideband filter centred on the H-alpha line. The cadence of this channel is 1 sec. The bottom panel shows images in the far blue wing of H-alpha at a cadence of 6 sec.