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1. X-rays from a reborn planetary nebula | Astronomy.com
... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Golden Earring, planetary nebula NGC 2867, and barred spiral galaxy NGC 3109 . ... X-rays from a reborn planetary nebula . ... The diffuse X-ray emission seen in the larger image and in the region around the central source in the inset is caused by interactions between wind from the star and the knots of the ejected material. ... The cause of the point-like X-ray emission from the central star is unknown. ...
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Ссылки http://www.astronomy.com/news/2012/11/x-rays-from-a-reborn-planetary-nebula -- 73.1 Кб -- 10.04.2016
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