Intergalactic baryon-rich regions at high redshift

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.

9 pages, many eps figures

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Cited by in corpus (10)

• The Role of Cold Flows in the Assembly of Galaxy Disks
• Fragmentation in the First Galaxies
• The Role of Cold Flows and Reservoirs in Galaxy Formation With Strong Feedback
• Gas infall into atomic cooling haloes: on the formation of protogalactic disks and supermassive black holes at z > 10
• The Shape Dependence of Vainshtein Screening
• Kelvin-Helmholtz Instability in Self-Gravitating Streams
• Galaxy Formation in Heavily Overdense Regions at z~10: the Prevalence of Disks in Massive Halos
• Local stability of a gravitating filament: a dispersion relation
• Filaments and sheets of the warm-hot intergalactic medium
• A Model For Intergalactic Filaments and Galaxy Formation During the First Gigayear