Dissecting the Thermal SZ Power Spectrum by Halo Mass and Redshift in SPT-SZ Data and Simulations

Abstract

We explore the relationship between the thermal Sunyaev-Zel'dovich (tSZ) power spectrum amplitude and the halo mass and redshift of galaxy clusters in South Pole Telescope (SPT) data, in comparison with three $N$-body simulations combined with semi-analytical gas models of the intra-cluster medium. Specifically, we calculate both the raw and fractional power contribution to the full tSZ power spectrum amplitude at $\ell =3000$ from clusters as a function of halo mass and redshift. We use nine mass bins in the range $1\times 10^{14}{M}_{\odot }{h}^{-1}<M_{500}<2\times 10^{15}{M}_{\odot }{h}^{-1}$, and two redshift bins defined by $0.25<z<0.59$ and $0.59<z<1.5$. We additionally divide the raw power contribution in each mass bin by the number of clusters in that bin, as a metric for comparison of different gas models. At lower masses, the SPT data prefers a model that includes a mass-dependent bound gas fraction component and relatively high levels of AGN feedback, whereas at higher masses there is a preference for a model with a lower amount of feedback and a complete lack of non-thermal pressure support. The former provides the best fit to the data overall, in regards to all metrics for comparison. Still, discrepancies exist and the data notably exhibits a steep mass-dependence which all of the simulations fail to reproduce. This suggests the need for additional mass- and redshift-dependent adjustments to the gas models of each simulation, or the potential presence of contamination in the data at halo masses below the detection threshold of SPT-SZ. Furthermore, the data does not demonstrate significant redshift evolution in the per-cluster tSZ power spectrum contribution, in contrast to self-similar model predictions.

arXiv comment19 pages, 15 figures, 5 tables; accepted by the Open Journal of Astrophysics

References in corpus (38)

• Planck 2015 results. XIII. Cosmological parameters
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Toward a halo mass function for precision cosmology: the limits of universality
• Mass function of dark matter halos
• The Simons Observatory: Science goals and forecasts
• Chandra sample of nearby relaxed galaxy clusters: mass, gas fraction, and mass-temperature relation
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Cosmology with the Sunyaev-Zel'dovich Effect
• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• The 10 Meter South Pole Telescope
• The BAHAMAS project: Calibrated hydrodynamical simulations for large-scale structure cosmology
• CMB-S4 Science Case, Reference Design, and Project Plan
• The Sunyaev-Zel'dovich angular power spectrum as a probe of cosmological parameters
• The distribution of stellar mass in the low-redshift Universe
• Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06
• Cluster Cosmology Constraints from the 2500 deg${}^2$ SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope
• The massive end of the luminosity and stellar mass functions: Dependence on the fit to the light profile
• The Atacama Cosmology Telescope: A Catalog of > 4000 Sunyaev-Zel'dovich Galaxy Clusters
• Halo mass function: Baryon impact, fitting formulae and implications for cluster cosmology
• The Atacama Cosmology Telescope: The polarization-sensitive ACTPol instrument
• A measurement of secondary cosmic microwave background anisotropies from the 2500-square-degree SPT-SZ survey
• On the Cluster Physics of Sunyaev-Zel'dovich Surveys II: Deconstructing the Thermal SZ Power Spectrum
• SZ effects in the Magneticum Pathfinder Simulation: Comparison with the Planck, SPT, and ACT results
• Simulations of the Microwave Sky
• Simulations of AGN feedback in galaxy clusters and groups: impact on gas fractions and the Lx-T scaling relation
• The Growth of Cool Cores and Evolution of Cooling Properties in a Sample of 83 Galaxy Clusters at 0.3 < z < 1.2 Selected from the SPT-SZ Survey
• The BAHAMAS project: the CMB--large-scale structure tension and the roles of massive neutrinos and galaxy formation
• An Improved Measurement of the Secondary Cosmic Microwave Background Anisotropies from the SPT-SZ + SPTpol Surveys
• A Simple and Accurate Model for Intra-Cluster Gas
• Templates for the Sunyaev-Zel'dovich Angular Power Spectrum
• The Atacama Cosmology Telescope: Component-separated maps of CMB temperature and the thermal Sunyaev-Zel'dovich effect
• Exploring the Energetics of Intracluster Gas with a Simple and Accurate Model
• CMB/kSZ and Compton-$y$ Maps from 2500 square degrees of SPT-SZ and Planck Survey Data
• Understanding Cluster Gas Evolution and Fine-Scale CMB Anisotropy with Deep Sunyaev-Zel'dovich Effect Surveys
• Removing the giants and learning from the crowd: a new SZ power spectrum method and revised Compton $y$-map analysis
• Scatter in Sunyaev--Zel'dovich effect scaling relations explained by inter-cluster variance in mass accretion histories
• Agora: Multi-Component Simulation for Cross-Survey Science