Universal subhalo accretion in cold and warm dark matter cosmologies

Abstract

The influence of the large scale structure on host halos may be studied by examining the angular infall pattern of subhalos. In particular, since warm and cold dark matter cosmologies predict different abundances and internal properties for halos at the low mass end of the mass function, it is interesting to examine if there are differences in how these low mass halos are accreted. The accretion events are defined as the moment a halo becomes a substructure, namely when it crosses its host's virial radius. We quantify the cosmic web at each point by the shear tensor and examine where, with respect to its eigenvectors, such accretion events occur in cold ($\Lambda$CDM) and warm (1keV sterile neutrino WDM) dark matter cosmological models. We find that the CDM and WDM subhalos are preferentially accreted along the principal axis of the shear tensor corresponding to the direction of weakest collapse. The beaming strength is modulated by the host and subhalo masses and by the redshift at which the accretion event occurs. Although strongest for the most massive hosts and subhalos at high redshift, the preferential infall is found to be always aligned with the axis of weakest collapse, thus we say that it has universal nature. We compare the strength of beaming in the WDM cosmology with the one found in the $\Lambda$CDM scenario. While the main findings remain the same, the accretion in the WDM model for the most massive host halos appears more beamed than in $\Lambda$CDM cosmology across all the redshifts.

arXiv comment12 pages, 9 figures

References in corpus (100)

• Planck 2015 results. XIII. Cosmological parameters
• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• Observational evidence for self-interacting cold dark matter
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Too big to fail? The puzzling darkness of massive Milky Way subhaloes
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Power Spectra and WMAP-Derived Parameters
• Halo Formation in Warm Dark Matter Models
• Dark Matter Self-interactions and Small Scale Structure
• The $\nu$MSM, Dark Matter and Baryon Asymmetry of the Universe
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• Ahf: Amiga's Halo Finder
• Reionization and the abundance of galactic satellites
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Cats and Dogs, Hair and A Hero: A Quintet of New Milky Way Companions
• The Core-Cusp Problem
• The Milky Way's bright satellites as an apparent failure of LCDM
• The role of sterile neutrinos in cosmology and astrophysics
• Cuspy No More: How Outflows Affect the Central Dark Matter and Baryon Distribution in Lambda CDM Galaxies
• The APOSTLE simulations: solutions to the Local Group's cosmic puzzles
• Eight New Milky Way Companions Discovered in First-Year Dark Energy Survey Data
• Subhaloes in Self-Interacting Galactic Dark Matter Haloes
• Mass Density Profiles of LSB Galaxies
• Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
• Properties of Dark Matter Haloes in Clusters, Filaments, Sheets and Voids
• The dependence of dark matter profiles on the stellar to halo mass ratio: a prediction for cusps vs cores
• The evolution substructure I: a new identification method
• Can Photoionization Squelching Resolve the Sub-structure Crisis?
• Substructure and halo density profiles in a Warm Dark Matter Cosmology
• Hundreds of Milky Way Satellites? Luminosity Bias in the Satellite Luminosity Function
• The haloes of bright satellite galaxies in a warm dark matter universe
• Lyman-alpha constraints on warm and on warm-plus-cold dark matter models
• The Effects of Photoionization on Galaxy Formation - II: Satellites in the Local Group
• Sterile neutrinos: the dark side of the light fermions
• A New Milky Way Companion: Unusual Globular Cluster or Extreme Dwarf Satellite?
• The origin and implications of dark matter anisotropic cosmic infall on ~L* haloes
• High-Resolution Measurements of the Halos of Four Dark Matter-Dominated Galaxies: Deviations from a Universal Density Profile
• A Dynamical Classification of the Cosmic Web
• Formation and structure of halos in a warm dark matter cosmology
• Too Big to Fail in the Local Group
• The Distribution of Satellite Galaxies: The Great Pancake
• Discreteness effects in simulations of Hot/Warm dark matter
• Is there a "too big to fail" problem in the field?
• Multi-Component Dark Matter
• The Rise and Fall of Satellites in Galaxy Clusters
• Dynamical Dark Matter: I. Theoretical Overview
• A kinematic classification of the cosmic web
• The velocity function in the local environment from LCDM and LWDM constrained simulations
• Can Feedback Solve the Too Big to Fail Problem?
• The Missing Massive Satellites of the Milky Way
• The Invisibles: A Detection Algorithm to Trace the Faintest Milky Way Satellites
• The rotationally stabilized VPOS and predicted proper motions of the Milky Way satellite galaxies
• The Warm DM halo mass function below the cut-off scale
• Resonantly-Produced 7 keV Sterile Neutrino Dark Matter Models and the Properties of Milky Way Satellites
• Two Planes of Satellites in the Centaurus A Group
• The velocity shear tensor: tracer of halo alignment
• Intrinsic alignments of galaxies in the Horizon-AGN cosmological hydrodynamical simulation
• Anisotropy in the Distribution of Satellite Galaxy Orbits
• The dark matter halos of dwarf galaxies: a challenge for the LCDM paradigm?
• Linear Cosmological Structure Limits on Warm Dark Matter
• Planes of satellite galaxies and the cosmic web
• Dark Matter Heating and Early Core Formation in Dwarf Galaxies
• Abundance of Field Galaxies
• M31 Satellite Masses Compared to LCDM Subhaloes
• The stellar-to-halo mass relation for Local Group galaxies
• Not too big, not too small: the dark halos of the dwarf spheroidals in the Milky Way
• Correlations in the orientations of galaxy clusters
• The universal nature of subhalo accretion
• Multi-Component Dark Matter Systems and Their Observation Prospects
• How cold is Dark Matter? Constraints from Milky Way Satellites
• Alignment between galaxies and large-scale structure
• Constrained simulations of the Local Group: on the radial distribution of substructures
• Merger Histories in Warm Dark Matter Structure Formation Scenario
• An adaptively refined phase-space element method for cosmological simulations and collisionless dynamics
• Expanded haloes, abundance matching and too-big-to-fail in the Local Group
• Stealth Galaxies in the Halo of the Milky Way
• The grouping, merging and survival of subhaloes in the simulated Local Group
• Constraints on Warm Dark Matter models from high-redshift long gamma-ray bursts
• The sizes of mini-voids in the local universe: an argument in favor of a warm dark matter model?
• Comparing the observable properties of dwarf galaxies on and off the Andromeda plane
• The Galaxy-Halo/Subhalo connection: Mass relations and implications for some satellite occupational distributions
• Bailing Out the Milky Way: Variation in the Properties of Massive Dwarfs Among Galaxy-Sized Systems
• The accretion of dark matter subhaloes within the cosmic web: primordial anisotropic distribution and its universality
• Massive Milky Way Satellites in Cold and Warm Dark Matter: Dependence on Cosmology
• A rumble in the dark: signatures of self-interacting dark matter in Super-Massive Black Hole dynamics and galaxy density profiles
• Dark Matter in the Local Universe
• Top-Down Fragmentation of a Warm Dark Matter Filament
• Cosmological Simulations of Multi-Component Cold Dark Matter
• The velocity shear and vorticity across redshifts and non-linear scales
• The Massive Satellite Population of Milky-Way Sized Galaxies
• Subhalo accretion through filaments
• Revisiting Multi-Component Dark Matter with New AMS-02 Data
• Detection of Non-Random Galaxy Orientations in X-ray Subclusters of the Coma Cluster
• Cold versus Warm Dark Matter simulations of a galaxy group
• Tidal features of classical Milky Way satellites in a $\Lambda$CDM universe
• The Large-Scale Environment of Dynamical Young Clusters of Galaxies

Cited by in corpus (5)

• The Hestia project: simulations of the Local Group
• The effect of tides on the Sculptor dwarf spheroidal galaxy
• Alignment between satellite and central galaxies in the SDSS DR7: dependence on large-scale environment
• Anisotropic satellite accretion onto the Local Group with HESTIA
• Mock Observations: Three Different Types of Galaxy Alignment in TNG100 Simulations