XRT Picture of the Week (XPOW)

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2016 May 24

Click for movie. Also available on YouTube.

A Tiny Coronal Cavity

A few months after Hinode was launched, on 18 March 2007, the XRT was observing the north pole of the Sun when this dark feature was observed. The Al-poly filter was used to take these images so it is not likely that the dark feature represents cool plasma. It is most likely a tiny X-Ray coronal cavity.

An X-Ray void could occur due to the presence of coronal magnetic fields.

Keywords: Cavity
Filters: Al_poly

(Prepared by Patricia Jibben)

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