Friday, 15 November 2013

X2.3 in AR11875

Five logs showing a GOES X2.3 flare in AR11875 (Nov 29 UT)- we see the flare arcade above the limb: the spot group is now behind the limb. Over the next 30min the flare arcade evolves into post flare loops while surges erupt nearby. Big surge s1 is retracting in log5 - causing a splash, it seems, in the chromosphere.

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