Astronomers using ESA's XMM-Newton infinite observatory bring captured the X-ray glow (shown hither inwards purple) emitted past times the hot gas that pervades the galaxy cluster XLSSC006.
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| Credit: ESA/XMM-Newton (X-rays); CFHT-LS (optical); XXL Survey |
The galaxies that belong to the cluster are concentrated towards the centre, alongside 2 dominant members. Since galaxy clusters usually bring exclusively i major galaxy at their core, this suggests that XLSSC006 is undergoing a merger event.
Pictured inwards this view, where the X-ray information are combined alongside a three-colour composite of optical as well as near-infrared information from the Canada-France-Hawaii Telescope, are a multitude of other galaxies. Some are closer to us than the cluster – similar the spiral galaxy towards the plough over off correct – as well as some are further away. The picture every bit good shows a handful of foreground stars belonging to our Galaxy galaxy, which stand upwardly out alongside their diffraction spikes (a mutual artefact of astronomical images), field the pocket-size royal dots sprinkled across the frame are indicate sources of X-rays, many of them beyond the Milky Way.
The X-ray information were obtained every bit business office of the XXL Survey, XMM-Newton's largest observational programme to date, alongside follow-up observations performed past times a release of other observatories around the Blue Planet as well as inwards space. The latest XXL Survey unloose contains information for 365 galaxy clusters, tracing their large-scale distribution across cosmic history. These observations are helping astronomers refine our agreement of the Universe's construction as well as evolution, as well as volition serve every bit a reference for ESA's hereafter missions Euclid as well as Athena.
Source: European Space Agency [October 08, 2018]
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