Cosmic Homogeneity Demonstrated with Luminous Red Galaxies
نویسندگان
چکیده
منابع مشابه
Cosmic homogeneity demonstrated with luminous red galaxies
We test the homogeneity of the Universe at z ∼ 0.3 with the Luminous Red Galaxy (LRG) spectroscopic sample of the Sloan Digital Sky Survey. First, the mean number N(R) of LRGs within completely surveyed LRG-centered spheres of comoving radius R is shown to be proportional to R at radii greater than R ∼ 70 h Mpc. The test has the virtue that it does not rely on the assumption that the LRG sample...
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We measure the 3D genus topology of large scale structure using Luminous Red Galaxies (LRGs) in the Sloan Digital Sky Survey and find it consistent with the Gaussian random phase initial conditions expected from the simplest scenarios of inflation. This studies 3D topology on the largest scales ever obtained. The topology is sponge-like. We measure topology in two volume-limited samples: a dens...
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We study the cross-correlation between 212 Mg II quasar absorption systems and ∼ 20,000 Luminous Red Galaxies (LRGs) selected from the Sloan Digital Sky Survey Data Release 1 in the redshift range 0.46 z6 0.8. The Mg II systems were selected to have λλ2796 & 2803 rest-frame equivalent widths >1.0 Å and identifications confirmed by the Fe II λ2600 or Mg I λ2852 lines. Over comoving scales 0.05–1...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2005
ISSN: 0004-637X,1538-4357
DOI: 10.1086/429084