XRT Picture of the Week (XPOW)

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2016 February 02

Click for movie. Also available on YouTube.

A Magnetic Null and Cool Reconnection

Several large, bright active regions were visible on the Sun on 23 January 2016. These regions have a large X-ray void between them that is often referred to as an magnetic x-point or magnetic null region high in the corona.

Hinode XRT was observing the large active region in the south when it observed a dark cusp outlined in bright X-ray emission. The cusp shape is a good indicator that magnetic reconnection is happening. Normally, this cusp would be filled with super hot, bright X-ray emission.

An AIA composite image shows that the X-ray void is filled with cool plasma so we have an example of cool reconnection.

Keywords: Cusp, X-Point
Filters: Thin_Be

(Prepared by Patricia Jibben)

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