Intergalactic baryon-rich regions at high redshift

A. Gayler Harford; Andrew J. S. Hamilton; Nickolay Y. Gnedin

doi:10.1111/j.1365-2966.2008.13608.x

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arXiv · 0805.2191

Intergalactic baryon-rich regions at high redshift

A. Gayler Harford·Andrew J. S. Hamilton·Nickolay Y. Gnedin

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Abstract

Using a high resolution cosmological simulation of reionization we have examined the differing structures formed by gas and dark matter at a redshift of 5.1. Baryon-rich regions form a small number of filaments, which connect the largest galaxies in the simulation. More detailed examination of the ten largest galaxies reveals long, slender gaseous filaments about 5 proper kpc in width radiating from the galaxy centers. Extending out from each filament are a few smooth, thin, nearly planar gaseous sheets. By contrast, the dark matter concentrates into quasi-spherical bodies. The results have implications for our understanding of structure formation in the early universe and of the Lyman alpha forest.

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A. Gayler Harford, Andrew J. S. Hamilton, Nickolay Y. Gnedin. 2008-05-15. Intergalactic baryon-rich regions at high redshift. https://doi.org/10.1111/j.1365-2966.2008.13608.x

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