On the estimation of the Local Dark Matter Density using the rotation curve of the Milky Way

Abstract

The rotation curve of the Milky Way is commonly used to estimate the local dark matter density ${\rho }_{\mathrm{DM},\odot }$. However, the estimates are subject to the choice of the distribution of baryons needed in this type of studies. In this work we explore several Galactic mass models that differ in the distribution of baryons and dark matter, in order to determine ${\rho }_{\mathrm{DM},\odot }$. For this purpose we analyze the precise circular velocity curve measurement of the Milky Way up to $\sim 25$ kpc from the Galactic centre obtained from Gaia DR2 [1]. We find that the estimated value of ${\rho }_{\mathrm{DM},\odot }$ stays robust to reasonable changes in the spherical dark matter halo. However, we show that ${\rho }_{\mathrm{DM},\odot }$ is affected by the choice of the model for the underlying baryonic components. In particular, we find that ${\rho }_{\mathrm{DM},\odot }$ is mostly sensitive to uncertainties in the disk components of the Galaxy. We also show that, when choosing one particular baryonic model, the estimate of ${\rho }_{\mathrm{DM},\odot }$ has an uncertainty of only about $10\%$ of its best-fit value, but this uncertainty gets much bigger when we also consider the variation of the baryonic model. In particular, the rotation curve method does not allow to exclude the presence of an additional very thin component, that can increase ${\rho }_{\mathrm{DM},\odot }$ by more than a factor of 8 (the thin disk could even be made of dark matter). Therefore, we conclude that exclusively using the rotation curve of the Galaxy is not enough to provide a robust estimate of ${\rho }_{\mathrm{DM},\odot }$. For all the models that we study without the presence of an additional thin component, our resulting estimates of the local dark matter density take values in the range ${\rho }_{\mathrm{DM},\odot }\simeq \text{0.3–0.4}GeV/c{\mathrm{m}}^3$, consistent with many of the estimates in the literature.

arXiv comment19 pages, 8 figures, 4 tables

References in corpus (45)

• emcee: The MCMC Hammer
• A Universal Density Profile from Hierarchical Clustering
• Gaia Data Release 2. Summary of the contents and survey properties
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• The Galaxy in Context: Structural, Kinematic and Integrated Properties
• The New Galaxy: Signatures of its Formation
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
• Gaia Data Release 2: Kinematics of globular clusters and dwarf galaxies around the Milky Way
• The APOSTLE simulations: solutions to the Local Group's cosmic puzzles
• A dynamically young and perturbed Milky Way disk
• The Local Dark Matter Density
• The spatial structure of mono-abundance sub-populations of the Milky Way disk
• The Circular Velocity Curve of the Milky Way from $5$ to $25$ kpc
• The Masses of the Milky Way and Andromeda galaxies
• On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy
• Thin, thick and dark discs in LCDM
• Double-Disk Dark Matter
• Stars, Gas, and Dark Matter in the Solar Neighborhood
• The Milky Way's Stellar Disk
• "Skinny Milky Way, Please", says Sagittarius
• A First Constraint on the Thick Disk Scale Length: Differential Radial Abundances in K Giants at Galactocentric Radii 4, 8, and 12 kpc
• On the Shoulders of Giants: Properties of the Stellar Halo and the Milky Way Mass Distribution
• Made-to-Measure models of the Galactic Box/Peanut bulge: stellar and total mass in the bulge region
• Dynamical constraints on the dark matter distribution in the Milky Way
• Evidence for an Intermediate-Mass Milky Way from Gaia DR2 Halo Globular Cluster Motions
• Rotation curve of the Milky Way from Classical Cepheids
• A Grand Rotation Curve and Dark Matter Halo in the Milky Way Galaxy
• The distribution of the ISM in the Milky Way A three-dimensional large-scale model
• The Dark Disk of the Milky Way
• Using Gaia DR2 to Constrain Local Dark Matter Density and Thin Dark Disk
• The Local Dark Matter Density from SDSS-SEGUE G-dwarfs
• The cumulative mass profile of the Milky Way as determined by globular cluster kinematics from Gaia DR2
• A Milky Way with a massive, centrally concentrated thick disc: new Galactic mass models for orbit computations
• Handling the Uncertainties in the Galactic Dark Matter Distribution for Particle Dark Matter Searches
• The incorrect rotation curve of the Milky Way
• The impact of baryons on the direct detection of dark matter
• Bayesian reconstruction of the Milky Way dark matter distribution
• Determining the local dark matter density with LAMOST data
• Galactoseismology and the Local Density of Dark Matter
• Implications of a time-varying Galactic potential for determinations of the dynamical surface density
• Measuring the local matter density using Gaia DR2
• A deeper look into the structure of ΛCDM haloes: correlations between halo parameters from Einasto fits

Cited by in corpus (96)

• Excess Electronic Recoil Events in XENON1T
• The Milky Way total mass profile as inferred from Gaia DR2
• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Overview of the DESI Milky Way Survey
• Direct Detection of Hawking Radiation from Asteroid-Mass Primordial Black Holes
• Keeping it Cool: Much Orbit Migration, yet Little Heating, in the Galactic Disk
• Detection of the Keplerian decline in the Milky Way rotation curve
• Gaia EDR3 proper motions of Milky Way dwarfs I: 3D Motions and Orbits
• Multimessenger constraints on the dark matter interpretation of the Fermi-LAT Galactic center excess
• Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo
• The Rotation Curve, Mass Distribution and Dark Matter Content of the Milky Way from Classical Cepheids
• Uncertainties in the Galactic dark matter distribution: an update
• A robust estimate of the Milky Way mass from rotation curve data
• Direct detection of dark photon dark matter using radio telescopes
• Migdal effect and photon Bremsstrahlung: improving the sensitivity to light dark matter of liquid argon experiments
• Weighing the Galactic disk using phase-space spirals II. Most stringent constraints to a thin dark disk using Gaia EDR3
• Dark Matter Annihilation Can Produce a Detectable Antihelium Flux through ${\bar{\Lambda }}_b$ Decays
• Milky Way Mass with K Giants and BHB Stars Using LAMOST, SDSS/SEGUE, and Gaia: 3D Spherical Jeans Equation and Tracer Mass Estimator
• Updated Constraints on Primordial Black Hole Evaporation
• Action-based distribution function modelling for constraining the shape of the Galactic dark matter halo
• Probing new light gauge bosons with gravitational-wave interferometers using an adapted semi-coherent method
• Primordial Black Hole Dark Matter evaporating on the Neutrino Floor
• Neutrino clustering in the Milky Way and beyond
• The dark matter component of the Gaia radially anisotropic substructure
• Searching for Ultralight Dark Matter Conversion in Solar Corona using Low Frequency Array Data
• The impact of the Large Magellanic Cloud on dark matter direct detection signals
• Analysis of galaxy kinematics based on Cepheids from the Gaia DR2 Catalogue
• Fuzzy dark matter black holes and droplets
• Precision Gamma-Ray Constraints for Sub-GeV Dark Matter Models
• Gravitational lensing $H_0$ tension from ultralight axion galactic cores
• Pinning down the primordial black hole formation mechanism with gamma-rays and gravitational waves
• Mapping Dark Matter in the Milky Way using Normalizing Flows and Gaia DR3
• Hunting for Dark Matter and New Physics with GECCO
• Implications of the Gaia Sausage for Dark Matter Nuclear Interactions
• Weighing the Galactic disk in sub-regions of the solar neighbourhood using Gaia DR2
• Which Milky Way masses are consistent with the slightly declining 5-25 kpc rotation curve?
• A Bayesian estimation of the Milky Way's circular velocity curve using Gaia DR3
• Searching for low mass dark matter via phonon creation in superfluid 4He
• Detecting Axion-Like Particles with Primordial Black Holes
• Gaia EDR3 proper motions of Milky Way dwarfs. II: Velocities, Total Energy and Angular Momentum
• A Global Analysis of Resonance-enhanced Light Scalar Dark Matter
• Primordial Black Hole Dark Matter in the Context of Extra Dimensions
• Dark matter capture by the Sun: revisiting velocity distribution uncertainties
• Gravitational waves from binary black holes in a self-interacting scalar dark matter cloud
• European Spallation Source as a searching tool for an ultralight scalar field
• Estimating the local dark matter density in a non-axisymmetric wobbling disc
• Dark matter local density determination based on recent observations
• The North/South Asymmetry of the Galaxy: Possible Connection to the Vertical Phase Space Snail
• Riding the dark matter wave: Novel limits on general dark photons from LISA Pathfinder
• The Escape Velocity Profile of the Milky Way from Gaia DR3
• Constraints on dark matter with future MeV gamma-ray telescopes
• Towards a fully consistent Milky Way disk model -- IV. The impact of Gaia DR2 and APOGEE
• The Morphology of Exciting Dark Matter and the Galactic 511 keV Signal
• Connecting the local stellar halo and its dark matter density to dwarf galaxies via blue stragglers
• Solar radio emissions and ultralight dark matter
• Charged Fuzzy Dark Matter Black Holes
• The local dark matter distribution in self-interacting dark matter halos
• Equilibrium axisymmetric halo model for the Milky Way and its implications for direct and indirect DM searches
• Sliding into DM: Determining the local dark matter density and speed distribution using only the local circular speed of the Galaxy
• Measuring the local Dark Matter density in the laboratory
• The formation history of the Milky Way disc with high-resolution cosmological simulations
• Prospects of future MeV telescopes in probing weak-scale Dark Matter
• Measuring the Matter Density of the Galactic Disk Using Stellar Streams
• Directional direct detection of light dark matter up-scattered by cosmic rays from direction of the Galactic center
• Freezing In with Lepton Flavored Fermions
• AMS-02 antiprotons and dark matter: Trimmed hints and robust bounds
• Local dark matter density from Gaia DR3 K-dwarfs using Gaussian processes
• Hawking Radiation Signatures from Primordial Black Holes Transiting the Inner Solar System: Prospects for Detection
• Deciphering the Kinematic Substructure of Local Dark Matter with LAMOST K Giants
• Indirect searches for realistic sub-GeV Dark Matter models
• Effect of generic dark matter halo on transonic accretion onto galactic black holes
• Probing sterile neutrino dark matter in the PTOLEMY-like experiment
• On particle scattering in Gross-Pitaevskii theory and implications for dark matter halos
• Exploring the detection of AQNs in large liquid detectors
• Hawking Radiation of Nonrelativistic Scalars: Applications to Pion and Axion Production
• Neutrino Lorentz invariance violation from the CPT-even SME coefficients through a tensor interaction with cosmological scalar fields
• Cosmological implications of the Gaia Milky Way declining rotation curve
• Gravitational Signatures of Axion Dark Matter via Parity-Violating Interactions
• Search for GeV-scale Dark Matter from the Galactic Center with IceCube-DeepCore
• An intriguing coincidence between the majority of vast polar structure dwarfs and a recent major merger at the M31 position
• Relic neutrino clustering in the Milky Way
• Searching for Particle Dark Matter with eROSITA Early Data
• Implications of the Milky Way Declining Rotation Curve
• The Galactic potential and dark matter density from angular stellar accelerations
• Limits on primordial black holes detectability with Isatis: A BlackHawk tool
• A new possible way to detect Axion Anti-quark Nuggets
• Constraints on Kinetic Mixing of Dark Photons from Dilepton Spectra
• The impact of relativistic corrections on the detectability of dark-matter spikes with gravitational waves
• Constraining primordial black hole abundance with Insight-HXMT
• Correlating Gravitational Wave and Gamma-ray Signals from Primordial Black Holes
• Search for New Physics via Low-Energy Electron Recoils with a 4.2 Tonne\times Year Exposure from the LZ Experiment
• Hawking radiation by spherically-symmetric static black holes for all spins: II -- Numerical emission rates, analytical limits and new constraints
• Three Models of the Gravitational Potential of the Milky Way
• Constraining light dark matter in vector-scalar portals with COSI and AMEGO-X
• Determination of the best dark matter profile for the Milky Way with Gaia DR3 using Bayesian Model Comparison
• The odd primordial halo of the Milky Way implied by Gaia. A shallow core, but a steep decline