Sloan Great Wall

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The Sloan Great Wall in a DTFE reconstruction of the inner parts of the 2dF Galaxy Redshift Survey.

The Sloan Great Wall (SGW) is a cosmic structure formed by a giant wall of galaxies (a galactic filament), and to the present day it is the largest known structure in the universe. Its discovery was announced on October 20, 2003, by J. Richard Gott III of Princeton University and Mario Jurić and their colleagues, based on data from the Sloan Digital Sky Survey.[1] The wall measures 1.37 billion light years (1.30×1025 m) in length, which is approximately 1/60 of the diameter of the observable universe, and is located approximately one billion light-years from Earth.

The Sloan Great Wall, is 2.74 times longer than the CfA2 Great Wall of galaxies, which was discovered by Margaret Geller and John Huchra of Harvard in 1989.[2] It contains several galactic superclusters, the largest and richest of which is named SCl 126. This is located in the highest density region of the structure. It is followed in size by the supercluster SCl 111.[3][4]

See also

References

  1. ^ Gott, J. Richard, III et al. (May 2005), "A Map of the Universe", The Astrophysical Journal 624 (2): 463–484, arXiv:astro-ph/0310571, Bibcode 2005ApJ...624..463G, doi:10.1086/428890  Figure 8 – "Logarithmic Maps of the Universe" – is available as a poster from the homepage of Mario Juric.
  2. ^ Geller, Margaret J.; Huchra, John P. (1989-11-17), "Mapping the Universe", Science 246 (4932): 897–903, Bibcode 1989Sci...246..897G, doi:10.1126/science.246.4932.897 
  3. ^ Einasto, M. et al. (July 2011), "The Sloan Great Wall. Morphology and Galaxy Content", The Astrophysical Journal 736 (1), arXiv:1105.1632, Bibcode 2011ApJ...736...51E, doi:10.1088/0004-637X/736/1/51 
  4. ^ "The Sloan Great Wall -- Supercluster of Galaxies", SIMBAD (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?Ident=SCl+126, retrieved 2011-12-24 

External links