Constraining a Thin Dark Matter Disk with Gaia

Abstract

If a component of the dark matter has dissipative interactions, it could collapse to form a thin dark disk in our Galaxy that is coplanar with the baryonic disk. It has been suggested that dark disks could explain a variety of observed phenomena, including periodic comet impacts. Using the first data release from the $Gaia$ space observatory, we search for a dark disk via its effect on stellar kinematics in the Milky Way. Our new limits disfavor the presence of a thin dark matter disk, and we present updated measurements on the total matter density in the Solar neighborhood.

7+19 pages, 2+18 figures. v2: updated to reflect version published in PRL with minor revisions (no change to conclusions)

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• Using Gaia DR2 to Constrain Local Dark Matter Density and Thin Dark Disk
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• Symmetry of Cosmological Observables, and a High Hubble Constant as an Indicator of a Mirror World Dark Sector
• Testing Gravity with wide binary stars like $\alpha$ Centauri
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• Uncertainties in the Galactic dark matter distribution: an update
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• A measurement of the Galactic plane mass density from binary pulsar accelerations
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• Direct Detection of Mirror Matter in Twin Higgs Models
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• Weighing the Galactic disk using phase-space spirals I. Tests on one-dimensional simulations
• Eclipse timing the Milky Way's gravitational potential
• Probing Dark Matter Using Precision Measurements of Stellar Accelerations
• Weighing the Galactic disk using phase-space spirals III. Probing distant regions of the disk using the Gaia EDR3 proper motion sample
• Mapping Dark Matter in the Milky Way using Normalizing Flows and Gaia DR3
• Chronostar. II. Kinematic age and substructure of the Scorpius-Centaurus OB2 association
• Weighing the Galactic disk in sub-regions of the solar neighbourhood using Gaia DR2
• Halo uncertainties in electron recoil events at direct detection experiments
• Addressing Astrophysical and Cosmological Problems With Secretly Asymmetric Dark Matter
• The DAMPE excess and gamma-ray constraints
• Testing MOdified Gravity (MOG) theory and dark matter model in Milky Way using the local observables
• The Milky Way, Coming into Focus: Precision Astrometry Probes its Evolution, and its Dark Matter
• Estimating the local dark matter density in a non-axisymmetric wobbling disc
• Dark Black Holes in the Mass Gap
• Dark matter local density determination based on recent observations
• Measuring Galactic Dark Matter through Unsupervised Machine Learning
• A Pulsar-Based Map of Galactic Acceleration
• Baryogenesis through Asymmetric Reheating in the Mirror Twin Higgs
• A Solar System Test of Self-Interacting Dark Matter
• Using LSST Microlensing to Constrain Dark Compact Objects in Spherical and Disk Configurations
• Weighing the Galactic disk using phase-space spirals IV. Tests on a three-dimensional galaxy simulation
• Accretion of Dissipative Dark Matter onto Active Galactic Nuclei
• Galaxy rotation curves disfavor traditional and self-interacting dark matter halos, preferring a disk component or Einasto function
• First spiral arm detection using dynamical mass measurements of the Milky Way disk
• Weighing the Local Interstellar Medium using Gamma Rays and Dust
• Galactic Geology: Probing Time-Varying Dark Matter Signals with Paleo-Detectors
• Resolution of the small scale structure issues with dissipative dark matter from multiple Standard Model sectors
• Testing $\Lambda$CDM With Dwarf Galaxy Morphology
• 21 cm cosmology and spin temperature reduction via spin-dependent dark matter interactions
• Measuring the Matter Density of the Galactic Disk Using Stellar Streams
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• Local dark matter density from Gaia DR3 K-dwarfs using Gaussian processes
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• The Galactic potential and dark matter density from angular stellar accelerations
• Dark Matter Deficient Galaxies as Probes of Dark Matter
• Charting galactic accelerations II: how to 'learn' accelerations in the solar neighbourhood
• Understanding the Galaxy