Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-02-08
Astronomy and Astrophysics
Astrophysics
11 pages, postscript file, 2 figures available upon request. To appear in ApJ Letters
Scientific paper
10.1086/187812
In this work, we analyse the temperature fluctuations of the cosmic microwave background radiation observed by COBE and show that the distribution can be fitted by a fractal distribution with a fractal dimension $ D= 1.43 \pm 0.07 $. This value is in close agreement with the fractal dimension obtained by Coleman and Pietronero (1992) and Luo and Schramm (1992) from galaxy-galaxy and cluster-cluster correlations up to $ \sim 100 h^{-1} Mpc$. The fact that the observed temperature fluctuations correspond to scales much larger than $ 100 h^{-1} Mpc$ and are signatures of the primordial density fluctuations at the recombination layer suggests that the structure of the matter at the early universe was already fractal and thus non-homogeneous on those scales. This result may have important consequences for the theoretical framework that describes the universe.
Dal Pino Elisabete M. de Gouveia
de Araujo Jose Carlos N.
de Souza A. W. C.
Hetem Annibal
Horvath Jorge Ernesto
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