XRT Picture of the Week (XPOW)

XRT Home XRT Mission Ops YouTube

2016 April 12

Click for movie. Also available on YouTube.

A Coronal Cavity Gets a Chewy Nougat

This movie combines Hinode XRT with Hinode SOT Ca II H-line data to demonstrate how a coronal cavity gets a chewy nougat. A chewy nougat is solar slang for hot X-ray emission in the center of a coronal cavity, usually sitting just above a cool prominence. So why does a cool solar prominence have such a hot head?

In this case, hot X-ray plasma slams into the prominence, causing cool prominence material to flow along an arc. Eventually, hot X-ray emission develops near the prominence tip.

Learn more about coronal cavities in this article published in Frontiers in Astronomy and Space Sciences in the coronal magnetometry research topic.

Keywords: Prominence, Limb, Cavity, Filament, SOT
Filters: thin_Be

(Prepared by Patricia Jibben)

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