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The Zeldovich & Adhesion approximations and applications to the local universe

Published online by Cambridge University Press:  12 October 2016

Johan Hidding ,
Rien van de Weygaert  and
Sergei Shandarin
Johan Hidding
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, Postbus 800, NL-9700AV, Groningen, the Netherlands email: johannes.hidding@gmail.com
Rien van de Weygaert
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, Postbus 800, NL-9700AV, Groningen, the Netherlands email: johannes.hidding@gmail.com
Sergei Shandarin
Affiliation:
Department of Physics and Astronomy, University of Kansas, 1082 Malott, 1251 Wescoe Hall Dr., Lawrence, KS 66045-7582
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Abstract

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The Zeldovich approximation (ZA) predicts the formation of a web of singularities. While these singularities may only exist in the most formal interpretation of the ZA, they provide a powerful tool for the analysis of initial conditions. We present a novel method to find the skeleton of the resulting cosmic web based on singularities in the primordial deformation tensor and its higher order derivatives. We show that the A 3 lines predict the formation of filaments in a two-dimensional model. We continue with applications of the adhesion model to visualise structures in the local (z < 0.03) universe.

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