Using Gaia DR2 to Constrain Local Dark Matter Density and Thin Dark Disk

Abstract

We use stellar kinematics from the latest Gaia data release (DR2) to measure the local dark matter density ${\rho }_{\mathrm{DM}}$ in a heliocentric cylinder of radius $R=150\mathrm{pc}$ and half-height $z=200\mathrm{pc}$. We also explore the prospect of using our analysis to estimate the DM density in local substructure by setting constraints on the surface density and scale height of a thin dark disk aligned with the baryonic disk and formed due to dark matter self-interaction. Performing the statistical analysis within a Bayesian framework for three types of tracers, we obtain ${\rho }_{\mathrm{DM}}=0.016\pm 0.010$ M${}_{\odot }$/pc${}^3$ for A stars; early G stars give a similar result, while F stars yield a significantly higher value. For a thin dark disk, A stars set the strongest constraint: excluding surface densities (5-12) M${}_{\odot }$/pc${}^2$ for scale heights below 100 pc with 95% confidence. Comparing our results with those derived using Tycho-Gaia Astrometric Solution (TGAS) data, we find that the uncertainty in our measurements of the local DM content is dominated by systematic errors that arise from assumptions of our kinematic analysis in the low $z$ region. Furthermore, there will only be a marginal reduction in these uncertainties with more data in the Gaia era. We comment on the robustness of our method and discuss potential improvements for future work.

arXiv comment35 pages, 18 figures; v2 matches the version to appear in JCAP

References in corpus (65)

• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The NumPy array: a structure for efficient numerical computation
• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
• Gaia Data Release 2: The astrometric solution
• Local Kinematics and the Local Standard of Rest
• SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
• Gaia Data Release 2: Photometric content and validation
• Gaia Data Release 2: using Gaia parallaxes
• A dynamically young and perturbed Milky Way disk
• A direct dynamical measurement of the Milky Way's disk surface density profile, disk scale length, and dark matter profile at 4 kpc < R < 9 kpc
• The Local Dark Matter Density
• The spatial structure of mono-abundance sub-populations of the Milky Way disk
• Vertical waves in the solar neighbourhood in Gaia DR2
• The dark matter density at the Sun's location
• On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy
• On the local dark matter density
• The local density of matter mapped by Hipparcos
• Galactoseismology: Discovery of Vertical Waves in the Galactic Disk
• Dissipative hidden sector dark matter
• The Cosmology of Atomic Dark Matter
• Double-Disk Dark Matter
• On Galactic density modeling in the presence of dust extinction
• Stars, Gas, and Dark Matter in the Solar Neighborhood
• Galactic Searches for Dark Matter
• The local surface density of disc matter mapped by Hipparcos
• Vertical density waves in the Milky Way disc induced by the Sagittarius Dwarf Galaxy
• The Sausage Globular Clusters
• Gaia Data Release 2: Properties and validation of the radial velocities
• Dynamical constraints on the dark matter distribution in the Milky Way
• A Dark-Disk Universe
• A new determination of the local dark matter density from the kinematics of K dwarfs
• Gaia Data Release 2: processing of the photometric data
• Gaia Data Release 2: Processing the spectroscopic data
• Stellar Inventory of the Solar Neighborhood using Gaia DR1
• Bending and Breathing Modes of the Galactic Disk
• Substructure in bulk velocities of Milky Way disk stars
• Galactic rotation in Gaia DR1
• Solving the small-scale structure puzzles with dissipative dark matter
• Constraining a Thin Dark Matter Disk with Gaia
• The Local Dark Matter Density from SDSS-SEGUE G-dwarfs
• Exothermic Double-Disk Dark Matter
• Dark Matter as a Trigger for Periodic Comet Impacts
• Limits on the local dark matter density
• Collapsed Dark Matter Structures
• A new reduction of the raw Hipparcos data
• The tilt of the velocity ellipsoid in the Milky Way disk
• Massive Black Holes from Dissipative Dark Matter
• Dark Catalysis
• Galactoseismology and the Local Density of Dark Matter
• Dissipative Dark Matter and the Andromeda Plane of Satellites
• Direct and indirect detection of dissipative dark matter
• Updated Kinematic Constraints on a Dark Disk
• Cooling in a Dissipative Dark Sector
• Exploring the astrophysics of dark atoms
• Interstellar Gas and a Dark Disk
• A non-parametric method for measuring the local dark matter density
• Constraining the Galactic potential via action-based distribution functions for mono-abundance stellar populations
• Nonthermal production of dark radiation and dark matter
• Point Sources from Dissipative Dark Matter
• Supersymmetric Partially Interacting Dark Matter
• Accretion of Dissipative Dark Matter onto Active Galactic Nuclei
• Self-interacting dark matter constraints in a thick dark disk scenario

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