Fluctuations in galaxy counts: a new test for homogeneity versus fractality

Details Fluctuations in galaxy counts: a new test for homogeneity versus fractality Fluctuations in galaxy counts: a new test for homogeneity versus fractality

2000-12-05

arxiv.org/abs/astro-ph/0012097v2

Europhys.Lett. vol. 54, issue 3, 1 May 2001

Astronomy and Astrophysics

Astrophysics

7 pages, corrected to match the published version

Scientific paper

10.1209/epl/i2001-00239-3

Fractal properties are usually characterized by means of various statistical tools which deal with spatial average quantities. Here we focus on the determination of fluctuations around the average counts and we develop a test for the study of galaxy distribution both in redshift and magnitude space. Fluctuations in the counts of galaxies, in a fractal distribution, are of the same order of the average number at all scales as a function of redshift and magnitude. We point out that the study of these kind of fluctuations can be a powerful test to understand the nature of galaxy clustering at very large scales.

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