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Wavelet analysis of the formation of the cosmic web | | J. Einasto
; G. Hütsi
; E. Saar
; I. Suhhonenko
; L. J. Liivamägi
; M. Einasto
; V. Müller
; A. A. Starobinsky E. Tago
; E. Tempel
; | | Date: |
16 Dec 2010 | | Abstract: | According to the modern cosmological paradigm galaxies and galaxy systems
form from tiny density perturbations generated during the very early phase of
the evolution of the Universe. Using numerical simulations we study the
evolution of phases of density perturbations of different scales to understand
the formation and evolution of the cosmic web. We apply the wavelet analysis to
follow the evolution of high-density regions (clusters and superclusters) of
the cosmic web. We show that the positions of maxima and minima of density
waves (their spatial phases) almost do not change during the evolution of the
structure. Positions of extrema of density perturbations are the more stable,
the larger is the wavelength of perturbations. Combining observational and
simulation data we conclude that the skeleton of the cosmic web was present
already in an early stage of structure evolution. | | Source: | arXiv, 1012.3550 | | Services: | Forum | Review | PDF | Favorites | |
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