Is the Universe Homogeneous on Large Scales?

Details Is the Universe Homogeneous on Large Scales? Is the Universe Homogeneous on Large Scales?

1996-10-19

arxiv.org/abs/astro-ph/9610149v2

Astronomy and Astrophysics

Astrophysics

11 pages Latex with 1 postscript figure. To be published in ``Critical Dialogues in Cosmology'' ed. N. Turok. Postscript also

Scientific paper

This contribution is the affirmative side of a debate held with Dr. L. Pietronero at Princeton in June, 1996. I present the observational evidence that the fractal behavior which characterizes the small scale galaxy distribution does not continue to arbitarily large scale, but has a well defined cutoff with an outer length scale of order 30h$^{-1}$ Mpc. For example, plots of the IRAS 1.2 Jy survey exhibit a very clear approach to homogeneity on large scale, in complete contradiction to the endless fractal model.

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