Mass and Concentration estimates from Weak and Strong Gravitational Lensing: a Systematic Study

Abstract

We study how well halo properties of galaxy clusters, like mass and concentration, are recovered using lensing data. In order to generate a large sample of systems at different redshifts we use the code MOKA. We measure halo mass and concentration using weak lensing data alone (WL), fitting to an NFW profile the reduced tangential shear profile, or by combining weak and strong lensing data, by adding information about the size of the Einstein radius (WL+SL). For different redshifts, we measure the mass and the concentration biases and find that these are mainly caused by the random orientation of the halo ellipsoid with respect to the line-of-sight. Since our simulations account for the presence of a bright central galaxy, we perform mass and concentration measurements using a generalized NFW profile which allows for a free inner slope. This reduces both the mass and the concentration biases. We discuss how the mass function and the concentration mass relation change when using WL and WL+SL estimates. We investigate how selection effects impact the measured concentration-mass relation showing that strong lens clusters may have a concentration 20-30% higher than the average, at fixed mass, considering also the particular case of strong lensing selected samples of relaxed clusters. Finally, we notice that selecting a sample of relaxed galaxy clusters, as is done in some cluster surveys, explain the concentration-mass relation biases.

(1) DIFA-UniBO, (2) INAF-OABo, (3) INFN-BO, (4) JPL-Pasadena 18 pages, 19 figures - accepted for publication by MNRAS, two figures added for comparison with SGAS-SDSS and LoCuSS clusters

References in corpus (9)

• Systematics in the X-ray Cluster Mass Estimators
• Cluster Lenses
• Cosmological Constraints from Strong Gravitational Lensing in Galaxy Clusters
• The Observed Concentration-Mass Relation for Galaxy Clusters
• Cold Dark Matter Substructure and Galactic Disks II: Dynamical Effects of Hierarchical Satellite Accretion
• Shape, spin and baryon fraction of clusters in the MareNostrum Universe
• Ellipsoidal halo finders and implications for models of triaxial halo formation
• The strongest gravitational lenses: I. The statistical impact of cluster mergers
• The Bound Mass of Substructures in Dark Matter Halos

Cited by in corpus (43)

• Robust Weak-lensing Mass Calibration of Planck Galaxy Clusters
• Weak lensing in a plasma medium and gravitational deflection of massive particles using the Gauss-Bonnet theorem. A unified treatment
• The stellar-to-halo mass relation over the past 12 Gyr
• Velocity-dependent Self-interacting Dark Matter from Groups and Clusters of Galaxies
• Some like it triaxial: the universality of dark matter halo shapes and their evolution along the cosmic time
• PSZ2LenS. Weak lensing analysis of the Planck clusters in the CFHTLenS and in the RCSLenS
• Comparing Masses in Literature (CoMaLit)-I. Bias and scatter in weak lensing and X-ray mass estimates of clusters
• The concentration-mass relation of clusters of galaxies from the OmegaWINGS survey
• CoMaLit III. Literature Catalogs of weak Lensing Clusters of galaxies (LC^2)
• Hubble Frontier Fields: systematic errors in strong lensing models of galaxy clusters - Implications for cosmography
• Weak Lensing Light-Cones in Modified Gravity simulations with and without Massive Neutrinos
• Nuw CDM cosmology from the weak lensing convergence PDF
• Finite distance corrections to the light deflection in a gravitational field with a plasma medium
• The mass-concentration relation in lensing clusters: the role of statistical biases and selection effects
• Cosmology dependency of halo masses and concentrations in hydrodynamic simulations
• CoMaLit - II. The scaling relation between mass and Sunyaev-Zel'dovich signal for Planck selected galaxy clusters
• On the dissection of degenerate cosmologies with machine learning
• Revisiting the bulge-halo conspiracy I: Dependence on galaxy properties and halo mass
• XXL Survey groups and clusters in the Hyper Suprime-Cam Survey. Scaling relations between X-ray properties and weak lensing mass
• MultiDarkLens Simulations: weak lensing light-cones and data base presentation
• Comparison of weak lensing by NFW and Einasto halos and systematic errors
• AMICO galaxy clusters in KiDS-DR3: cosmological constraints from large-scale stacked weak lensing profiles
• Disentangling dark sector models using weak lensing statistics
• SARCS strong-lensing galaxy groups: II - mass-concentration relation and strong-lensing bias
• Euclid preparation. XXXII. Evaluating the weak lensing cluster mass biases using the Three Hundred Project hydrodynamical simulations
• RELICS: Strong-lensing analysis of the massive clusters MACS J0308.9+2645 and PLCK G171.9-40.7
• Weak-lensing mass bias in merging galaxy clusters
• Expressions for optical scalars and deflection angle at second order in terms of curvature scalars
• Low X-ray Luminosity Galaxy Clusters. III: Weak Lensing Mass Determination at 0.18 $<$ z $<$ 0.70
• Brightest Cluster Galaxies Trace Weak Lensing Mass Bias and Halo Triaxiality in The Three Hundred Project
• Shapley Supercluster Survey: mapping the dark matter distribution
• Weak lensing of the Lyman-alpha forest
• Abell 315: reconciling cluster mass estimates from kinematics, X-ray, and lensing
• Simulations for 21 cm radiation lensing at EoR redshifts
• Characterising Strong Lensing Galaxy Clusters using the Millennium-XXL and MOKA simulations
• Efficient Mass Estimate at the Core of Strong Lensing Galaxy Clusters Using the Einstein Radius
• Shape Profiles and Orientation Bias for Weak and Strong Lensing Cluster Halos
• Weak-lensing tunnel voids in simulated light cones: A new pipeline to investigate modified gravity and massive neutrinos signatures
• Euclid preparation: Determining the weak lensing mass accuracy and precision for galaxy clusters
• Selecting background galaxies in weak-lensing analysis of galaxy clusters
• The Three Hundred Project hydrodynamical simulations: Hydrodynamical weak-lensing cluster mass biases and richnesses using different hydro models
• Galaxy cluster mass bias from projected mass maps: The Three Hundred-NIKA2 LPSZ twin samples
• Multi-scale weak lensing detection of galaxy clusters with source redshift tomography