The THREEHUNDRED project: the effect of baryon processes at galaxy cluster scale
arXiv:2111.01889 · doi:10.1051/epjconf/202225700011
Abstract
The role of baryon models played in hydrodynamic simulations is still unclear. Future surveys that use cluster statistics to precisely constrain cosmology models require a better understanding of that. With the hydro-simulated galaxy clusters from different baryon models (Gadget-MUSIC, Gadget-X and Gizmo-SIMBA) from the THREEHUNDRED project, we can look into more details of this question. We find that the galaxy cluster mass change due to different baryon models is at a few per cent level. However, the mass changes can be positive or negative, which is depending on the baryon models. Such a small mass change leaves a weak influence (slightly larger compared to the mass changes) on both the cumulative halo numbers and the differential halo mass function (HMF) above the mass completeness. Agreed to the halo mass change, the halo mass (or HMF) can be increased or decreased with respect to the dark-matter-only (DMO) run depending on the baryon models.
To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences
References in corpus (16)
- Simba: Cosmological Simulations with Black Hole Growth and Feedback
- The Three Hundred Project: Backsplash galaxies in simulations of clusters
- Mapping and characterisation of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations
- The Three Hundred Project: correcting for the hydrostatic-equilibrium mass bias in X-ray and SZ surveys
- The ThreeHundred: the structure and properties of cosmic filaments in the outskirts of galaxy clusters
- The Three Hundred Project: Ram pressure and gas content of haloes and subhaloes in the phase-space plane
- The Three Hundred project: shapes and radial alignment of satellite, infalling, and backsplash galaxies
- Cosmic filaments in galaxy cluster outskirts: quantifying finding filaments in redshift space
- The Three Hundred Project: the stellar and gas profiles
- The Three Hundred Project: Substructure in hydrodynamical and dark matter simulations of galaxy groups around clusters
- The Three Hundred Project: The gas disruption of infalling objects in cluster environments
- The thermalisation of massive galaxy clusters
- SELCIE: A tool for investigating the chameleon field of arbitrary sources
- The Impact of Baryons on the Large-Scale Structure of the Universe
- Chameleon Screening Depends on the Shape and Structure of NFW Halos
- Galaxy Velocity Bias in Cosmological Simulations: Towards Percent-level Calibration