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2016 December 13

Hinode XRT observes the Sun
Click for movie. Also available on YouTube.

The Aftereffects of Flaring

The Sun released another mid-sized flare this weekend and the aftereffects of the flare were well observed with Hinode XRT. The C4.0 flare occurred in AR12615 as it sat on the west limb around 18UT on December 10th, 2016.

When a flare happens on the solar limb, we are able to view the event edge on instead of from above. The bright canopy loops that engulf the active region no longer mask what's happening below them.

This video shows that even hours after a flare, the vicinity of the active region is rapidly changing. When bright X-ray loops cool they shrink and the X-ray emission decreases causing an X-ray void to propagate outward.

The void suggests these loops are cooling and indeed, when we view the region using IRIS we discover coronal rain.

IRIS movie provided by Jakub Prchlik.

Keywords: Flare, Limb, Cusp
Filters: Thin_Be, IRIS/Si IV 1400

(Prepared by Patricia Jibben)

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