Angular Correlations of Galaxy Distribution
نویسندگان
چکیده
منابع مشابه
Angular correlations of galaxy distribution
We study the angular correlations of various galaxy catalogs (CfA1, SSRS1, Perseus-Pisces, APM Bright Galaxies and Zwicky). We find that the angular correlation exponent is γ a = 0.1 ± 0.1 rather than γ a = 0.7 as usually found by the standard correlation function ω(θ). We identify the problem in the artificial decay of ω(θ). Moreover we find that no characteristic angular scale is present in a...
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The power-law dependence of the angle in the angular projection of galaxy distribution is explained by assuming that in the spherical shells within a small angle the distributions are also fractal, this local angular fractal gives the so-called local isotropy a precise meaning and thus realizes the Cosmological Principle in a fractal model in a rather strict way. If it possesses local angular f...
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We present an angular power spectrum analysis of the 2 Micron All Sky Survey (2MASS) full release extended source catalogue. The main sample used includes 518 576 galaxies below an extinction-corrected magnitude of Ks =13.5 and limited to |b| > 20◦. The power spectrum results provide an estimate of the galaxy density fluctuations at extremely large scales, r∼ 1000 h −1 Mpc. We compare this with...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1997
ISSN: 0004-637X
DOI: 10.1086/310871