Scaling properties of the Lyman--$α$ forest

Details Scaling properties of the Lyman--$α$ forest Scaling properties of the Lyman--$α$ forest

1996-10-04

arxiv.org/abs/astro-ph/9610035v1

Astronomy and Astrophysics

Astrophysics

8 pages, 5 figures, proceedings of the Sesto Workshop on ``Dark and Visible Matter in Galaxies'', PASP Conference Series

Scientific paper

We present some statistical features of the large number of \lya absorption lines detected in high redshift quasar spectra, obtained by using the multifractal approach. In the analysed sample of 12 QSO sight--lines, 11 show scaling behaviour with a crossover between two distinct regimes: a non-homogeneous regime at small scales and a homogeneous regime at large scales. The correlation length shows a redshift dependence, suggesting that the \lya forest can be an intermediate phenomenon between a strongly inhomogeneous galaxy distribution in the local Universe and a homogeneous initial mass distribution.

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