Accurate dark matter halo elongation from weak-lensing stacking analysis
arXiv:2207.09482 · doi:10.1093/mnras/stac3038
Abstract
Shape estimates that quantify the halo anisotropic mass distribution are valuable parameters that provide information on their assembly process and evolution. Measurements of the mean shapes for a sample of cluster-sized halos can be used to test halo formation scenarios, as well as improving the modelling of potential biases in constraining cosmological parameters using these systems. In this work, we test the recovery of halo cluster shapes and masses applying weak-lensing stacking techniques. To this end, we use lensing and a new dark matter halo catalogue, derived from the light-cone output of the cosmological simulation MICE-GC. We perform this study by combining the lensing signals obtained for several samples of halos, selected according to their mass and redshift, taking into account the main directions of the dark-matter distributions. In the analysis we test the impact of several potential systematics, such as the adopted modelling, the contribution of the neighbouring mass distributions, miscentering and misalignment effects. Our results show that, when some considerations regarding the halo relaxation state are taken into account, the lensing semi-axis ratio estimates are in agreement within with the mean shapes of the projected dark-matter particle distribution of the stacked halos. The methodology presented provides a useful tool to derive reliable shapes of galaxy clusters and to contrast them with those expected from numerical simulations. Furthermore, our proposed modelling, which takes into account the contribution of neighbouring halos, allows one to constrain the elongation of the surrounding mass distribution.
arXiv comment18 pages, 12 figures, accepted MNRAS
References in corpus (76)
- emcee: The MCMC Hammer
- A Universal Density Profile from Hierarchical Clustering
- LSST: from Science Drivers to Reference Design and Anticipated Data Products
- The Large Scale Bias of Dark Matter Halos: Numerical Calibration and Model Tests
- Triaxial Modeling of Halo Density Profiles with High-resolution N-body Simulations
- redMaPPer I: Algorithm and SDSS DR8 Catalog
- The statistics of LCDM Halo Concentrations
- Halo concentrations in the standard LCDM cosmology
- The Structure of Dark Matter Haloes in Hierarchical Clustering Models
- The Shape of Dark Matter Halos: Dependence on Mass, Redshift, Radius, and Formation
- The redshift dependence of the structure of massive LCDM halos
- COLOSSUS: A python toolkit for cosmology, large-scale structure, and dark matter halos
- Accurate universal models for the mass accretion histories and concentrations of dark matter halos
- Internal and External Alignment of the Shapes and Angular Momenta of LCDM Halos
- The redMaPPer Galaxy Cluster Catalog From DES Science Verification Data
- Galaxy alignments: An overview
- The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
- Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances and Weak Lensing
- An accurate physical model for halo concentrations
- Universal structure of dark matter haloes over a mass range of 20 orders of magnitude
- Dark Energy Survey Year 1 Results: Weak Lensing Mass Calibration of redMaPPer Galaxy Clusters
- Combined strong and weak lensing analysis of 28 clusters from the Sloan Giant Arcs Survey
- The MICE Grand Challenge Lightcone Simulation I: Dark matter clustering
- The Three-Point Correlation Function in Cosmology
- The Redshift Evolution of LCDM Halo Parameters: Concentration, Spin, and Shape
- The MICE Grand Challenge Lightcone Simulation III: Galaxy lensing mocks from all-sky lensing maps
- The MICE Grand Challenge Lightcone Simulation II: Halo and Galaxy catalogues
- Weak Lensing Measurement of the Mass--Richness Relation of SDSS redMaPPer Clusters
- Large scale bias and stochasticity of halos and dark matter
- Galaxy alignments: Observations and impact on cosmology
- An algorithm to build mock galaxy catalogues using MICE simulations
- Analytic models of plausible gravitational lens potentials
- Galaxy alignments: Theory, modelling and simulations
- Three-Point Correlations in Weak Lensing Surveys: Model Predictions and Applications
- Detailed cluster lensing profiles at large radii and the impact on cluster weak lensing studies
- The MUSIC of CLASH: predictions on the concentration-mass relation
- Direct measurement of dark matter halo ellipticity from two-dimensional lensing shear maps of 25 massive clusters
- The Shapes and Alignments of Dark Matter Halos
- Analytical properties of Einasto dark matter haloes
- The alignment and shape of dark matter, stellar, and hot gas distributions in the EAGLE and cosmo-OWLS simulations
- Combined reconstruction of weak and strong lensing data with WSLAP
- Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons
- Intracluster light: a luminous tracer for dark matter in clusters of galaxies
- Halo Profiles and the Concentration-Mass Relation for a ΛCDM Universe
- Shape of Dark Matter Haloes in the Illustris Simulation: Effects of Baryons
- Weak Lensing by Galaxies in Groups and Clusters: I.--Theoretical Expectations
- Formation times, mass growth histories and concentrations of dark matter haloes
- A Detection of Dark Matter Halo Ellipticity using Galaxy Cluster Lensing in SDSS
- Dark Energy Survey Year 1 Results: Calibration of Cluster Mis-centering in the redMaPPer Catalogs
- Measuring the growth of matter fluctuations with third-order galaxy correlations
- Universality of dark matter haloes shape over six decades in mass: Insights from the Millennium XXL and SBARBINE simulations
- The intra-cluster light as a tracer of the total matter density distribution: a view from simulations
- Shapes of clusters and groups of galaxies: Comparison of model predictions with observations
- Constraints on the shapes of galaxy dark matter haloes from weak gravitational lensing
- The Projected Dark and Baryonic Ellipsoidal Structure of 20 CLASH Galaxy Clusters
- On the shape of dark matter halos from MultiDark Planck simulations
- The ellipticity of galaxy cluster halos from satellite galaxies and weak lensing
- A look to the inside of haloes: a characterisation of the halo shape as a function of overdensity in the Planck cosmology
- Is diffuse intracluster light a good tracer of the galaxy cluster matter distribution?
- Halo ellipticity of GAMA galaxy groups from KiDS weak lensing
- Cluster Magnification & the Mass-Richness Relation in CFHTLenS
- Lensing Measurements of the Ellipticity of LRG Dark Matter Halos
- Shapes and alignments of dark matter haloes and their brightest cluster galaxies in 39 strong lensing clusters
- The Distribution of Satellites Around Central Galaxies in a Cosmological Hydrodynamical Simulation
- Galaxy-galaxy weak-lensing measurement from SDSS: II. host halo properties of galaxy groups
- Perturbation theory for modeling galaxy bias: validation with simulations of the Dark Energy Survey
- Strong orientation dependence of surface mass density profiles of dark haloes at large scales
- Intrinsic alignment of redMaPPer clusters: cluster shape - matter density correlation
- CLUMP-3D: Three-dimensional Shape and Structure of 20 CLASH Galaxy Clusters from Combined Weak and Strong Lensing
- The shape of galaxy dark matter halos in massive galaxy clusters: Insights from strong gravitational lensing
- Weak-lensing calibration of a stellar mass-based mass proxy for redMaPPer and Voronoi Tessellation clusters in SDSS Stripe 82
- Ellipticity of Brightest Cluster Galaxies as tracer of halo orientation and weak-lensing mass bias
- An analysis of galaxy cluster mis-centring using cosmological hydrodynamic simulations
- Masses: Weak Lensing Calibration of the Dark Energy Survey Year 1 redMaPPer Clusters using Stellar Masses
- Measuring the surface mass density ellipticity of redMaPPer galaxy clusters using weak-lensing
- Galaxy clusters as intrinsic alignment tracers: present and future