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The largest coherent structure in the universe
Wednesday, 11 May 2011 10:44
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Astronomy - Galaxies

The Sloane Great Wall super-galaxy-cluster structure 3D map

Eastonian astronomers has maped the barrier of galaxies known as the "Sloane Great Wall" (image left), which is the biggest known coherent struture in the universe.

Stars cluster in galaxies. Galaxies cluster in galaxy-clusters which in turns cluster in super-clusters. And the super-galaxy-clusters follows some distinct fragmented patterns in space.

Most of the galaxy groups contained in these structures has been cataloged and the structure allready has been mapped. But the cataloges of galaxy clusters may not be complete, and some seperate clusters may have been mapped as one.

The Sloane Great Wall super-galaxy-cluster structure 3D map

3D map of the super-galaxy-cluster strutures in the universe

Thus the Eastonian astronomers has followed a different approach and mapped the Big Red Galaxies (BRG's). BRG's are the result of many galaxy mergers and therefore most often found in the centers of galaxy-clusters.  But all galaxy-clusters has a number of BRG's - most often 5 or 6 of them.

So by mapping the BRGs in 3D, they have accomplished to make a more complete 3D mapping of the galaxy structures in our known universe, as shown in the map above.

The map is not complete, because the galaxy-plane of the Milkyway blocks our field of view vertically in the map.

But


READ THE ARTICLE on arXiv