SC13 Home > SC13 Schedule > SC13 Presentation - Formation of the Cosmic Web

SCHEDULE: NOV 16-22, 2013

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Formation of the Cosmic Web

SESSION: Scientific Visualization Showcase Exhibit

EVENT TYPE: Scientific Visualization Showcases

TIME: 8:30AM - 5:00PM

AUTHOR(S):Ralf Kaehler, Oliver Hahn, Tom Abel

ROOM:Mile High Pre-Function

ABSTRACT:
This animation is based on a cosmological N-body dark matter simulation of the formation of the large-scale structure in the Universe. It shows how gravity amplifies small dark matter density fluctuations generated shortly after the Big Bang, leading to the formation of galaxies in the cosmic web. Features of the web, like sheets, filaments and halos, the latter hosting galaxies made out of normal, baryonic matter, become clearly visible. The visualization was generated using a highly accurate GPU-based rendering method that employs full phase-space information to generate a tetrahedral tessellation of the computational domain, with mesh vertices defined by the simulation's dark matter tracer particle positions. Over time the mesh is deformed by gravitational forces as computed by the N-body code, which causes the tetrahedral cells to warp and overlap. About 4 billion tetrahedral elements contributed to each time step in this visualization.

Chair/Author Details:

Ralf Kaehler - SLAC National Accelerator Laboratory

Oliver Hahn - ETH Zurich

Tom Abel - Stanford University

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