News on Galaxies
- A deeper look at Centaurus A giant galaxy
- Hubble observes nebulae in distant dwarf galaxy
- Overfed black holes shut down galactic star-making
- The eye of the storm in a galaxy-cluster
- A galaxy that is both slim and round
- The Milkyway have a strange structure associated with it
- Hundreds of Blazars
- Colliding galaxy-clusters
- 'Time machine' will study the early universe
- The heart of a cosmic collision
- Starbursts in early galaxies not caused by mergers
- The Sun align with the Orion galaxy-arm
- Discovery of an unusaul rectangular galaxy
- 200.000 galaxies in just ONE image
- The most excotic known galaxy
- Spider web of star formations in distant galaxy
- Series of quasars acting as gravitational lenses
- Mapping of dark matter around a galaxy-cluster
- Intergalactic recycling
- Discovery of a change in galaxies growth
- Galaxies el'Dorado
- The dans of galaxies in the Hercules galaxy-cluster
- Discovery of hidden very early galaxy-cluster
- The Antlia dwarf galaxy ...
- Dark matter in the core of the galaxy cluster
|
The largest coherent structure in the universe
Wednesday, 11 May 2011 10:44
|
|
| Astronomy - Galaxies |
|
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.
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 |




