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Title: Modeling Early Galaxies Using Radiation Hydrodynamics

This simulation uses a flux-limited diffusion solver to explore the radiation hydrodynamics of early galaxies, in particular, the ionizing radiation created by Population III stars. At the time of thimore »s rendering, the simulation has evolved to a redshift of 3.5. The simulation volume is 11.2 comoving megaparsecs, and has a uniform grid of 10243 cells, with over 1 billion dark matter and star particles. This animation shows a combined view of the baryon density, dark matter density, radiation energy and emissivity from this simulation. The multi-variate rendering is particularly useful because is shows both the baryonic matter ("normal") and dark matter, and the pressure and temperature variables are properties of only the baryonic matter. Visible in the gas density are "bubbles", or shells, created by the radiation feedback from young stars. Seeing the bubbles from feedback provides confirmation of the physics model implemented. Features such as these are difficult to identify algorithmically, but easily found when viewing the visualization. Simulation was performed on Kraken at the National Institute for Computational Sciences. Visualization was produced using resources of the Argonne Leadership Computing Facility at Argonne National Laboratory.« less
Title: Modeling Early Galaxies Using Radiation Hydrodynamics
Publication Date: 2011-01-01
OSTI Identifier: 1045606
Resource Type: Multimedia
Research Org: Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org: USDOE
Subject: argonne ; diffusion ; radiation ; hydrodynamics ; galaxies ; ionizing ; megaparsecs ; baryon density
Country of Publication: United States
Language: English
Run Time: 0:01:47
System Entry Date: 2016-01-27