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File:HAWK-I and Hubble Explore a Cluster with the Mass of two Quadrillion Suns.jpg

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Original file ‎(4,036 × 4,013 pixels, file size: 3.19 MB, MIME type: image/jpeg)

Summary

Description
HAWK-I and Hubble Explore a Cluster with the Mass of two Quadrillion Suns

This image shows something spectacular: a massive galaxy cluster that it is warping the space around it! The cluster, whose heart is at the centre of the frame, is named RCS2 J2327, and is one of the most massive clusters known at its distance or beyond.

Massive objects such as RCS2 J2327 have such a strong influence on their surroundings that they visibly warp the space around them. This effect is known as gravitational lensing. In this way, they cause the light from more distant objects to be bent, distorted, and magnified, allowing us to see galaxies that would otherwise be far too distant to detect. Gravitational lensing is one of the predictions of Einstein's theory of general relativity. Strong lensing produces stunning images of distorted galaxies and sweeping arcs; both of which can be seen in this image. Weak gravitational lensing, on the other hand, is more subtle, hardly seen directly in an image, and is mostly studied statistically — but it provides a way to measure the masses of cosmic objects, as in the case of this cluster.

This image is a composite of observations from the HAWK-I instrument on ESO’s Very Large Telescope and the NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys. It demonstrates an impressively detailed collaborative approach to studying weak lensing in the cosmos. The study found RCS2 J2327 to contain the mass of two quadrillion Suns!

The diffuse blue and white image covering the picture shows a mass map. It is connected to the amount of mass thought to be contained within each region.
Date
Source https://www.eso.org/public/images/potw1752a/
Author ESO, ESA/Hubble & NASA

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This media was created by the European Southern Observatory (ESO).
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You are free:
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attribution
 ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution: ESA/Hubble
You are free:
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Under the following conditions:
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Date/TimeThumbnailDimensionsUserComment
current11:35, 25 December 2017Thumbnail for version as of 11:35, 25 December 20174,036 × 4,013 (3.19 MB)JmencisomUser created page with UploadWizard
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