Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 473, Issue 1, Pages 68-79Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stx2323
Keywords
dark matter; large-scale structure of Universe; cosmology: theory
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Funding
- INDARK INFN grant
- Consorzio per la Fisica di Trieste
- National Science Foundation of China [11233005, 11621303]
- Ministerio de Economia y Competitividad
- Fondo Europeo de Desarrollo Regional (MINECO/FEDER, UE) in Spain [AYA2015-63810-P]
- Consolider-Ingenio Programme of the Spanish Ministerio de Ciencia e Innovacion (MICINN) [MultiDark CSD2009-00064]
- Australian Research Council (ARC) [DP140100198]
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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.
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