XRT Picture of the Week (XPOW)

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2017 May 02

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

Slow Moving Shadow in X-rays

While looking through the XPOW archive, I came across an interesting quiet Sun XPOW. The XPOW highlights the dynamic nature of the quiet Sun. One feature caught my eye as it moved across the field of view. A shadowy-looking structure sweeps over a bright X-ray region. The above movie shows the shadow.

There are only two things that could cause this. First, an absence of X-ray emission which doesn't seem likely, or the shadow consists of very cool and dense plasma. From this video it looks likely that the latter is the explanation. X-ray shadows are some of the most interesting and cool structures on the Sun.

Another example of a quiet Sun structure is QS Dark Structure.

Keywords: Quiet Sun, Bright Point
Filters: Ti_poly

(Prepared by Patricia Jibben)

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