The galaxy population in cold and warm dark matter cosmologies

Abstract

We use a pair of high resolution N-body simulations implementing two dark matter models, namely the standard cold dark matter (CDM) cosmogony and a warm dark matter (WDM) alternative where the dark matter particle is a 1.5keV thermal relic. We combine these simulations with the GALFORM semi-analytical galaxy formation model in order to explore differences between the resulting galaxy populations. We use GALFORM model variants for CDM and WDM that result in the same z=0 galaxy stellar mass function by construction. We find that most of the studied galaxy properties have the same values in these two models, indicating that both dark matter scenarios match current observational data equally well. Even in under-dense regions, where discrepancies in structure formation between CDM and WDM are expected to be most pronounced, the galaxy properties are only slightly different. The only significant difference in the local universe we find is in the galaxy populations of "Local Volumes", regions of radius 1 to 8Mpc around simulated Milky Way analogues. In such regions our WDM model provides a better match to observed local galaxy number counts and is five times more likely than the CDM model to predict sub-regions within them that are as empty as the observed Local Void. Thus, a highly complete census of the Local Volume and future surveys of void regions could provide constraints on the nature of dark matter.

arXiv comment16 pages, 14 figures, accepted by MNRAS

References in corpus (109)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The cosmological simulation code GADGET-2
• Where are the missing galactic satellites?
• Populating a cluster of galaxies - I. Results at z=0
• The broken hierarchy of galaxy formation
• A Line of Sight Approach to Cosmic Microwave Background Anisotropies
• Hierarchical Galaxy Formation
• The Aquarius Project: the subhalos of galactic halos
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• Cold collapse and the core catastrophe
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• A History of Dark Matter
• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Halo Formation in Warm Dark Matter Models
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• The Milky Way's bright satellites as an apparent failure of LCDM
• The ACS Virgo Cluster Survey. XIII. SBF Distance Catalog and the Three-Dimensional Structure of the Virgo Cluster
• Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness of parameters
• A Method for Measuring (Slopes of) the Mass Profiles of Dwarf Spheroidal Galaxies
• The Cores of Dwarf Galaxy Halos
• Eight New Milky Way Companions Discovered in First-Year Dark Energy Survey Data
• Subhaloes in Self-Interacting Galactic Dark Matter Haloes
• Beasts of the Southern Wild: Discovery of nine Ultra Faint satellites in the vicinity of the Magellanic Clouds
• Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
• The 2dF Galaxy Redshift Survey: The dependence of galaxy clustering on luminosity and spectral type
• The Observed properties of Dark Matter on small spatial scales
• The properties of warm dark matter haloes
• Constraining Self-Interacting Dark Matter with the Milky Way's dwarf spheroidals
• A unified multi-wavelength model of galaxy formation
• The haloes of bright satellite galaxies in a warm dark matter universe
• Dark matter and cosmic structure
• Quantifying the heart of darkness with GHALO - a multi-billion particle simulation of our galactic halo
• The Effects of Photoionization on Galaxy Formation - II: Satellites in the Local Group
• ZOBOV: a parameter-free void-finding algorithm
• The Luminosity Function of the Milky Way Satellites
• The Mass-Concentration-Redshift Relation of Cold and Warm Dark Matter Halos
• Galaxy formation in WMAP1 and WMAP7 cosmologies
• The Void Phenomenon
• Nonlinear Evolution of Cosmological Structures in Warm Dark Matter Models
• The dependence of clustering on galaxy properties
• A Cosmic Watershed: the WVF Void Detection Technique
• Discreteness effects in simulations of Hot/Warm dark matter
• Evolution of Galaxy Stellar Mass Functions, Mass Densities, and Mass to Light Ratios from z 7 to z 4
• Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey
• The APOSTLE project: Local Group kinematic mass constraints and simulation candidate selection
• Bent by baryons: the low mass galaxy-halo relation
• The Aspen--Amsterdam Void Finder Comparison Project
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the configuration-space clustering wedges
• Constraints on the Dark Matter Particle Mass from the Number of Milky Way Satellites
• The velocity function in the local environment from LCDM and LWDM constrained simulations
• A new model of galaxy formation: How sensitive are predicted galaxy luminosities to the choice of SPS model?
• N-body Dark Matter Haloes with simple Hierarchical Histories
• Clues from nearby galaxies to a better theory of cosmic evolution
• Dark Matter Halo Merger Histories Beyond Cold Dark Matter: I - Methods and Application to Warm Dark Matter
• How well can we really estimate the stellar masses of galaxies from broadband photometry?
• The chosen few: the low mass halos that host faint galaxies
• The Warm DM halo mass function below the cut-off scale
• Predictions for the CO emission of galaxies from a coupled simulation of galaxy formation and photon dominated regions
• A New Faint Milky Way Satellite Discovered in the Pan-STARRS1 3 pi Survey
• The COpernicus COmplexio: Statistical Properties of Warm Dark Matter Haloes
• The Parameter Space of Galaxy Formation
• A new way of setting the phases for cosmological multi-scale Gaussian initial conditions
• Abundance of Field Galaxies
• At the survey limits: discovery of the Aquarius 2 dwarf galaxy in the VST ATLAS and the SDSS data
• MOIRCS Deep Survey IV: Evolution of Galaxy Stellar Mass Function Back to z ~ 3
• The Copernicus Complexio: a high-resolution view of the small-scale Universe
• On the nature of the Milky Way satellites
• Testing the Warm Dark Matter paradigm with large-scale structures
• Lighting the Universe with filaments
• On the Structure of Dark Matter Halos at the Damping Scale of the Power Spectrum with and without Relict Velocities
• Faint dwarfs as a test of DM models: WDM vs. CDM
• The phase space density of fermionic dark matter haloes
• Clues on void evolution I: Large scale galaxy distributions around voids
• Merger Histories in Warm Dark Matter Structure Formation Scenario
• Satellite galaxies in semi-analytic models of galaxy formation with sterile neutrino dark matter
• Constraints on the identity of the dark matter from strong gravitational lenses
• Substructure and galaxy formation in the Copernicus Complexio warm dark matter simulations
• Galaxy Formation in WDM Cosmology
• The origin of the atomic and molecular gas contents of early-type galaxies. II. Misaligned gas accretion
• Galaxy and Mass Assembly (GAMA): Projected Galaxy Clustering
• Early galaxy formation in warm dark matter cosmologies
• Voids in the LCRS versus CDM Models
• Focusing on Warm Dark Matter with Lensed High-redshift Galaxies
• Constraints on Warm Dark Matter models from high-redshift long gamma-ray bursts
• The clustering of Ly-alpha emitters in a LambdaCDM Universe
• The Cusp/Core problem: supernovae feedback versus the baryonic clumps and dynamical friction model
• The First Billion Years of a Warm Dark Matter Universe
• A modified star formation law as a solution to open problems in galaxy evolution
• Building a Predictive Model of Galaxy Formation - I: Phenomenological Model Constrained to the $z=0$ Stellar Mass Function
• Warm dark matter primordial spectra and the onset of structure formation at redshift z
• The Cosmic Evolution of Faint Satellite Galaxies as a Test of Galaxy Formation and the Nature of Dark Matter
• The effect of Warm Dark Matter on galaxy properties: constraints from the stellar mass function and the Tully-Fisher relation
• Top-Down Fragmentation of a Warm Dark Matter Filament
• Constraints on galaxy formation models from the galaxy stellar mass function and its evolution
• Simulations of galaxies formed in warm dark matter halos of masses at the filtering scale
• Sussing Merger Trees : The Impact of Halo Merger Trees on Galaxy Properties in a Semi-Analytic Model
• Mapping the real space distributions of galaxies in SDSS DR7: I. Two Point Correlation Functions
• The Milky Way system in LCDM cosmological simulations
• MaGICC-WDM: the effects of warm dark matter in hydrodynamical simulations of disc galaxy formation
• The Asymptotic Form of Cosmic Structure: Small Scale Power and Accretion History
• A new methodology to test galaxy formation models using the dependence of clustering on stellar mass
• The inner structure of dwarf sized halos in Warm and Cold Dark Matter cosmologies
• The Evolution of Active Galactic Nuclei in Warm Dark Matter Cosmology
• Star forming filaments in warm dark matter models
• The Local Void: for or against LCDM?
• The abundance and colours of galaxies in high redshift clusters in the cold dark matter cosmology
• Extended Stellar Components of Galaxies & the Nature of Dark Matter

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• Cold dark matter plus not-so-clumpy dark relics
• Warm dark matter and the ionization history of the Universe
• Dark Matter microphysics and 21 cm observations
• Constraining FIMP from the structure formation of the Universe: analytic mapping from $m_{\mathrm{WDM}}$
• Cosmological searches for a non-cold dark matter component
• Warm Dark Matter and Cosmic Reionization
• 21-cm observations and warm dark matter models
• Galaxy Formation in Sterile Neutrino Dark Matter Models
• Multi-component Dark Matter in a Simplified E${}_6$SSM Model
• Candidate Massive Galaxies at $z\sim 4$ in the Dark Energy Survey
• Local Group star formation in warm and self-interacting dark matter cosmologies
• The edge of galaxy formation III: The effects of warm dark matter on Milky Way satellites and field dwarfs
• Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data
• Simulating Kilonovae in the ΛCDM Universe
• Fingerprint matching of beyond-WIMP dark matter: neural network approach
• Caught in the cosmic web: environmental effects on subhalo abundance and internal density profiles
• Two categories of UV-upturn galaxies revealed by semi-analytic models
• Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter