The large-scale environment from cosmological simulations - I. The baryonic cosmic web

Weiguang Cui, Alexander Knebe, Gustavo Yepes, Xiaohu Yang, Stefano Borgani, Xi Kang, Chris Power, Lister Staveley-Smith

Research output: Contribution to journalArticle

Abstract

Using a series of cosmological simulations that includes one dark-matter-only (DM-only) run, one gas cooling-star formation-supernova feedback (CSF) run and one that additionally includes feedback from active galactic nuclei (AGNs), we classify the large-scale structures with both a velocity-shear-tensor code (VWEB) and a tidal-tensor code (PWEB). We find that the baryonic processes have almost no impact on large-scale structures - at least not when classified using aforementioned techniques. More importantly, our results confirm that the gas component alone can be used to infer the filamentary structure of the universe practically un-biased, which could be applied to cosmology constraints. In addition, the gas filaments are classified with its velocity (VWEB) and density (PWEB) fields, which can theoretically connect to the radio observations, such as HI surveys. This will help us to bias-freely link the radio observations with dark matter distributions at large scale.

LanguageEnglish
Pages68-79
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Volume473
Issue number1
DOIs
StatePublished - 1 Jan 2018

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radio observation
dark matter
gas
tensors
radio
simulation
gas cooling
cosmology
gases
active galactic nuclei
supernovae
star formation
filaments
universe
shear
cooling
code
distribution

Cite this

Cui, Weiguang ; Knebe, Alexander ; Yepes, Gustavo ; Yang, Xiaohu ; Borgani, Stefano ; Kang, Xi ; Power, Chris ; Staveley-Smith, Lister. / The large-scale environment from cosmological simulations - I. The baryonic cosmic web. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 473, No. 1. pp. 68-79
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The large-scale environment from cosmological simulations - I. The baryonic cosmic web. / Cui, Weiguang; Knebe, Alexander; Yepes, Gustavo; Yang, Xiaohu; Borgani, Stefano; Kang, Xi; Power, Chris; Staveley-Smith, Lister.

In: Monthly Notices of the Royal Astronomical Society, Vol. 473, No. 1, 01.01.2018, p. 68-79.

Research output: Contribution to journalArticle

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Cui W, Knebe A, Yepes G, Yang X, Borgani S, Kang X et al. The large-scale environment from cosmological simulations - I. The baryonic cosmic web. Monthly Notices of the Royal Astronomical Society. 2018 Jan 1;473(1):68-79. Available from, DOI: 10.1093/mnras/stx2323