Correlations in the orientations of galaxy clusters

Abstract

The relative orientation of clusters' major elongation axes and clusters' angular momentum is studied using a large N-body simulation in a box of 500 Mpc/h base length for a standard LambdaCDM model. Employing the technique of mark correlation functions, we successfully separated the correlations in the orientation from the well known clustering signal traced by the two-point correlation function. The correlations in the orientation are highly significant for our sample of 3000 clusters. We found an alignment of neighboring clusters, i.e. an enhanced probability of the major elongation axes of neighboring cluster pairs to be in parallel with each other. At 10 Mpc/h separation the amplitude of this signal is ~10% above the value expected from random orientations, and it vanishes on scales larger than 15 Mpc/h. The ``filamentary'' alignment between clusters' major elongation axes and the lines pointing towards neighboring clusters shows even stronger deviations from random orientation, which can be detected out to scales of 100 Mpc/h, both in 2D and 3D analyses. Similarly, strong correlations of the angular momentum were seen. Also a clear signal in the scalar correlation of the absolute value of the angular momentum, the spin parameter and the mass was found. They extend up to 50 Mpc/h and have an amplitude of 40%, 15%, and 10% above a random distribution at 10 Mpc/h separation, respectively.

10 pages, 10 figures, A&A, accepted 28/08/02

References in corpus (4)

• The origin of angular momentum in dark matter halos
• A Systematic Study of X-Ray Substructure of Galaxy Clusters Detected in the ROSAT All-Sky Survey
• The Cluster Substructure - Alignment Connection
• Spatial distribution of galactic halos and their merger histories

Cited by in corpus (79)

• Dancing in the dark: galactic properties trace spin swings along the cosmic web
• The spin and shape of dark matter haloes in the Millennium simulation of a LambdaCDM universe
• Internal and External Alignment of the Shapes and Angular Momenta of LCDM Halos
• The origin and implications of dark matter anisotropic cosmic infall on ~L* haloes
• On the environmental dependence of halo formation
• On the Accuracy of Weak Lensing Cluster Mass Reconstructions
• The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
• Connecting the cosmic web to the spin of dark halos: implications for galaxy formation
• Spin alignment of dark matter haloes in filaments and walls
• Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample
• A marked correlation function analysis of halo formation times in the Millennium Simulation
• Statistics of Physical Properties of Dark Matter Clusters
• Galaxy Zoo: Disentangling the Environmental Dependence of Morphology and Colour
• Inter-cluster filaments in a $\Lambda$CDM Universe
• Shapes and Alignments of Galaxy Cluster Halos
• The distribution and kinematics of early high-sigma peaks in present-day haloes: implications for rare objects and old stellar populations
• The spin and orientation of dark matter halos within cosmic filaments
• Evidence for spin alignment of spiral and elliptical/S0 galaxies in filaments
• Galaxy alignments: Theory, modelling and simulations
• The WiggleZ Dark Energy Survey: Direct constraints on blue galaxy intrinsic alignments at intermediate redshifts
• Cluster Alignments and Ellipticities in LCDM Cosmology
• Anisotropy in the Distribution of Satellite Galaxy Orbits
• The dependence on environment of Cold Dark Matter Halo properties
• Angular momentum-Large-scale structure alignments in LCDM models and the SDSS
• Alignments of galaxies within cosmic filaments from SDSS DR7
• Galaxy Shapes and Intrinsic Alignments in The MassiveBlack-II Simulation
• The cosmic history of the spin of dark matter haloes within the large scale structure
• Spin alignments of spiral galaxies within the large-scale structure from SDSS DR7
• The Influence of Large-Scale Structure on Halo Shapes and Alignments
• Probing the Intrinsic Shape and Alignment of Dark Matter Haloes using SDSS Galaxy Groups
• Are Great Disks Defined by Satellite Galaxies in Milky-Way Type Halos Rare in $\Lambda$CDM model?
• The orientation of galaxy dark matter haloes around cosmic voids
• Spatial and kinematic alignments between central and satellite halos
• Galaxy-halo alignments in the Horizon-AGN cosmological hydrodynamical simulation
• Halo Shapes From Weak Lensing: The Impact of Galaxy--Halo Misalignment
• Galaxy Alignments as a Probe of the Dynamical State of Clusters
• The Shape-Alignment relation in $\Lambda$CDM Cosmic Structures
• The halo-model description of marked statistics
• Environmental Enhancement of Loose Groups around Rich Clusters of Galaxies
• Imprints of mass accretion on properties of galaxy clusters
• The Immitigable Nature of Assembly Bias: The Impact of Halo Definition on Assembly Bias
• A New Algorithm for the Detection of Inter-cluster Galaxy Filaments using Galaxy Orientation Alignments
• Detection of intrinsic cluster alignments to 100 Mpc/h in the SDSS
• Environmental Influences on the Morphology and Dynamics of Group Size Haloes
• Las Campanas Loose Groups in the Supercluster-Void Network
• Disentangling correlated scatter in cluster mass measurements
• The Intrinsic Alignment of Dark Halo Substructures
• Galaxy subgroups in galaxy clusters
• The role of spin in the formation and evolution of galaxies
• The Relation Between Halo Shape, Velocity Dispersion and Formation Time
• Cluster-Supercluster Alignments
• Alignments of Group Galaxies with Neighboring Groups
• Evidence for Dark Matter Annihilation from Galactic Gamma Rays?
• An Analytic Model for the Axis-Ratio Distribution of Dark Matter Halos from the Primordial Gaussian Density Field
• Alignment between Luminous Red Galaxies and surrounding structures at $z\sim 0.5$
• Environmental Enhancement of DM Haloes
• Phase-space shapes of clusters and rich groups of galaxies
• The geometry of the filamentary environment of galaxy clusters
• Density-dependent clustering: I. Pulling back the curtains on motions of the BAO peak
• Weak lensing mass modeling bias and the impact of miscentring
• Double-Damped Lyman Alpha Absorption: A Possible Large Neutral Hydrogen Gas Filament Near Redshift z=1
• Alignment of Galaxies and Clusters
• The X-ray Properties of Weak Lensing Selected Galaxy Clusters
• The orientations of galaxy groups and formation of the Local Supercluster
• DeFiNe: an optimisation-based method for robust disentangling of filamentous networks
• Autocorrelations of stellar light and mass at z~0 and ~1: From SDSS to DEEP2
• Spin and structural halo properties at high redshift in a LCDM Universe
• Alignments of dark matter halos with large-scale tidal fields: mass and redshift dependence
• Measuring the Mach number of the Universe via the Sunyaev-Zeldovich effect
• Autocorrelations of stellar light and mass in the low-redshift Universe
• Large scale anisotropies on halo infall
• Universal subhalo accretion in cold and warm dark matter cosmologies
• A rising tide: Intrinsic alignments since the turn of the millennium
• The Spatial Range of Conformity
• Cosmological Signatures of Dark Sector Physics: The Evolution of Haloes and Spin Alignment
• Dependence of the dynamical properties of light-cone simulation dark matter halos on their environment
• Subhalos are Anisotropically Distributed and Aligned with the Smooth Matter Distribution of Their Host Halos
• A Simulated Annealing algorithm to quantify patterns in astronomical data
• The velocity--shape alignment of clusters and the kinetic Sunyaev--Zeldovich effect