Hubble finds dark matter ring in galaxy cluster

An international team of astronomers using the NASA/ESA Hubble Space Telescope has discovered a ghostly ring of dark matter that was formed long ago during a titanic collision between two massive galaxy clusters. It is the first time that a dark matter distribution has been found that differs substantially from the distribution of ordinary matter.

This image shows the galaxy cluster Cl 0024+17 (ZwCl 0024+1652) as seen by Hubble's Advanced Camera for Surveys. The image displays faint faraway background galaxies that had their light bent by the cluster's strong gravitational field. By mapping the distorted light and using it to deduce how dark matter is distributed in the cluster, astronomers spotted the ring of dark matter. One of the background galaxies is located about two times further away than the yellow cluster galaxies in the foreground, and has been multiple-imaged into five separate arc-shaped components, seen in blue.

Credit:

NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University)

About the Image

Id:heic0709b
Type:Observation
Release date:15 May 2007, 19:00
Related releases:heic0709
Size:3838 x 3928 px

About the Object

Name:ZwCl0024+1652
Type:• Early Universe : Galaxy : Grouping : Cluster
• Early Universe : Cosmology : Phenomenon : Dark Matter
• X - Cosmology Images/Videos
Distance:z=0.39 (redshift)

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BandWavelengthTelescope
Optical
B
435 nm Hubble Space Telescope
ACS
Optical
B
475 nm Hubble Space Telescope
ACS
Optical
V
555 nm Hubble Space Telescope
ACS
Optical
R
625 nm Hubble Space Telescope
ACS
Infrared
I
814 nm Hubble Space Telescope
ACS
Infrared
Z
850 nm Hubble Space Telescope
ACS

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