1995/10/31 by Elena Lega, E. Lega, Lega, E. +8
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #Scientific Research and Discoveries #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9510156
uuencoded compressed postscript file, accepted for publication in Astronomy and Astrophysics
arxiv created 1995/10/31 · arxiv updated 2009/12/01
We propose a morphological multi-scale analysis of large-scale structures obtained by computer simulations and by observations. Structures are obtained at different scales by applying a wavelet transform on the observed and simulated data. Application of a segmentation algorithm allows a quantitative morphological description of the structures at each scale. The morphological parameter which we propose represents the deviation of a structure from sphericity. The dependence on scale of this simple parameter is shown to characterize in simulations the underlying cosmological model. We compare the HDM, CDM and mixed models with the CfA catalogue. This comparison favours a mixed model containing 65% of CDM, 30% of HDM, and 5% baryonic matter.