Center-Excised X-ray Luminosity as an Efficient Mass Proxy for Future Galaxy Cluster Surveys

Abstract

The cosmological constraining power of modern galaxy cluster catalogs can be improved by obtaining low-scatter mass proxy measurements for even a small fraction of sources. In the context of large upcoming surveys that will reveal the cluster population down to the group scale and out to high redshifts, efficient strategies for obtaining such mass proxies will be valuable. In this work, we use high-quality weak lensing and X-ray mass estimates for massive clusters in current X-ray selected catalogs to revisit the scaling relations of the projected, center-excised X-ray luminosity ($L_{ce}$), which previous work suggests correlates tightly with total mass. Our data confirm that this is the case, with $L_{ce}$ having an intrinsic scatter at fixed mass comparable to that of gas mass, temperature or $Y_X$. Compared to these other proxies, however, $L_{ce}$ is less susceptible to systematic uncertainties due to background modeling, and can be measured precisely with shorter exposures. This opens up the possibility of using $L_{ce}$ to estimate masses for large numbers of clusters discovered by new X-ray surveys (e.g. eROSITA) directly from the survey data, as well as for clusters discovered at other wavelengths, with relatively short follow-up observations. We describe a simple procedure for making such estimates from X-ray surface brightness data, and comment on the spatial resolution required to apply this method as a function of cluster mass and redshift. We also explore the potential impact of Chandra and XMM-Newton follow-up observations over the next decade on dark energy constraints from new cluster surveys.

9 pages. Accepted version

References in corpus (13)

• Some Aspects of Measurement Error in Linear Regression of Astronomical Data
• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• Report of the Dark Energy Task Force
• Weighing the Giants IV: Cosmology and Neutrino Mass
• Cosmology and Astrophysics from Relaxed Galaxy Clusters II: Cosmological Constraints
• XMM-Newton and Chandra Cross Calibration Using HIFLUGCS Galaxy Clusters: Systematic Temperature Differences and Cosmological Impact
• The Lx-Yx Relation: Using Galaxy Cluster X-Ray Luminosity as a Robust, Low Scatter Mass Proxy
• Weighing the Giants V: Galaxy Cluster Scaling Relations
• The redshift evolution of massive galaxy clusters in the MACSIS simulations
• Cosmology and Astrophysics from Relaxed Galaxy Clusters III: Thermodynamic Profiles and Scaling Relations
• Scaling relations and mass calibration of the X-ray luminous galaxy clusters at z~0.2: XMM-Newton observations
• X-ray bright active galactic nuclei in massive galaxy clusters III: New insights into the triggering mechanisms of cluster AGN
• A Gibbs Sampler for Multivariate Linear Regression

Cited by in corpus (23)

• The galaxy cluster mass scale and its impact on cosmological constraints from the cluster population
• Universal thermodynamic properties of the intracluster medium over two decades in radius in the X-COP sample
• X-ray scaling relations for a representative sample of Planck selected clusters observed with XMM-Newton
• Scaling Properties of Galaxy Groups
• A Deep Learning Approach to Galaxy Cluster X-ray Masses
• Stellar Property Statistics of Massive Halos from Cosmological Hydrodynamics Simulations: Common Kernel Shapes
• Galaxy cluster mass estimation with deep learning and hydrodynamical simulations
• Using X-Ray Morphological Parameters to Strengthen Galaxy Cluster Mass Estimates via Machine Learning
• The Cosmic Telescope that Lenses the Sunburst Arc, PSZ1 G311.65-18.48: Strong Gravitational Lensing model and Source Plane Analysis
• Linking a universal gas density profile to the core-excised X-ray luminosity in galaxy clusters up to z ~ 1.1
• Scatter in Sunyaev--Zel'dovich effect scaling relations explained by inter-cluster variance in mass accretion histories
• Effects of Multiphase Gas and Projection on X-ray Observables in Simulated Galaxy Clusters as Seen by eROSITA
• The XMM Cluster Survey analysis of the SDSS DR8 redMaPPer Catalogue: Implications for scatter, selection bias, and isotropy in cluster scaling relations
• Mass Calibration of the CODEX Cluster Sample using SPIDERS Spectroscopy -- II. The X-ray Luminosity-Mass Relation
• Rhapsody-C simulations -- Anisotropic thermal conduction, black hole physics, and the robustness of massive galaxy cluster scaling relations
• Efficient Mass Estimate at the Core of Strong Lensing Galaxy Clusters Using the Einstein Radius
• Radio-relic and the diffuse emission trail discovered in a low mass galaxy cluster Abell 1697
• Characterizing galaxy clusters by their gravitational potential: systematics of cluster potential reconstruction
• Scaling relations of clusters and groups, and their evolution
• X-ray flux -- mass relation for $z\gtrsim 0.7$ galaxy clusters
• Multiwavelength Characterization of a Dynamically Relaxed Cool Core Galaxy Cluster at $z=1.5$
• Do gas-poor galaxy clusters have different galaxy populations? The positive covariance of hot and cold baryons
• Estimating the triaxiality of massive clusters from 2D observables in MillenniumTNG with machine learning