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Mapping the most massive overdensity through hydrogen (mammoth). I. Methodology

Cai, Zheng; Fan, Xiaohui; Peirani, Sebastien; Bian, Fuyan; Frye, Brenda; McGreer, Ian; Prochaska, J. Xavier; Lau, Marie Wingyee; Tejos, Nicolas; Ho, Shirley; Schneider, Donald P.

Description

Modern cosmology predicts that a galaxy overdensity (e.g., protocluster) will be associated with a large intergalactic medium gas reservoir, which can be traced by Lyα forest absorption. We have undertaken a systematic study of the relation between Coherently Strong intergalactic Lyα Absorption systems (CoSLAs), which have the highest optical depth (τ) in the τ distribution, and mass overdensities on the scales of ~10–20 h⁻¹ comoving Mpc. On such large scales, our cosmological simulations show...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
URI: http://hdl.handle.net/1885/114182
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/833/2/135

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