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Discovery X-Ray Image of the Distant Cluster ESA XMM-Newton
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Discovery X-Ray Image of the Distant Cluster (ESA XMM-Newton)

August 23, 2005
This is a reproduction of the XMM-Newton observations of the nearby active galaxy NGC7314 (bright object in the centre) from which the newly found distant cluster (white box) was serendipitously identified. The circular field-of-view of XMM-Newton is half-a-degree in diameter, or about the same angular size as the Full Moon. The inset shows the diffuse X-ray emission from the distant cluster XMMU J2235.3-2557.


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