Composite Images of HCG16
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Composite Images of HCG16

January 24, 2013
An X-ray image of the Hickson Galaxy Group (HCG16) shown in false colour X-ray from the EPIC-PN instrument on the right, and through optical monitor V filter on the left. The ability to record images simultaneously over a range of wavelengths is an important first for XMM, allowing new X-ray discoveries to be placed immediately in the context of more familiar images from the optical portion of the spectrum. Copyright: ESA

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