A pair of dynamic active regions rotated into view as SDO caught the
activity over for a little over two days (Aug. 15 – 17, 2011). One can
compare the activity in this side-by-side-by-side video clip in three
wavelengths. At left, plasma near the surface is shown at 60,000
degrees in extreme ultraviolet light. Note that the feature rising up
above the Sun’s edge between the active regions is a quiescent
prominence. The middle portion with many looping arcs, also in
extreme UV light, shows plasma heated to about a million degrees.
The right portion shows the magnetically intense sunspots themselves
that are the sources of all the activity. These areas have produced
smaller solar storms and could yet generate stronger ones. Time will tell.
Note added Tuesday morning: EVE data will be unavailable
Wednesday morning for about 2 hours starting at 11 am ET to replace
hardware in data farm.
quelle: SDO
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