The Dark Matter at the End of the Galaxy

Abstract

Dark matter density profiles based upon Lambda-CDM cosmology motivate an ansatz velocity distribution function with fewer high velocity particles than the Maxwell-Boltzmann distribution or proposed variants. The high velocity tail of the distribution is determined by the outer slope of the dark matter halo, the large radius behavior of the Galactic dark matter density. N-body simulations of Galactic halos reproduce the high velocity behavior of this ansatz. Predictions for direct detection rates are dramatically affected for models where the threshold scattering velocity is within 30% of the escape velocity.

arXiv comment10 pages, 5 figures

References in corpus (68)

• A Universal Density Profile from Hierarchical Clustering
• Local Kinematics and the Local Standard of Rest
• Concentrations of Dark Halos from their Assembly Histories
• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Inelastic Dark Matter
• New results from DAMA/LIBRA
• Results from the Final Exposure of the CDMS II Experiment
• The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars
• Asymmetric Dark Matter
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• The Shape of Dark Matter Halos: Dependence on Mass, Redshift, Radius, and Formation
• A novel determination of the local dark matter density
• First Dark Matter Results from the XENON100 Experiment
• A Search for WIMPs with the First Five-Tower Data from CDMS
• Quantifying the heart of darkness with GHALO - a multi-billion particle simulation of our galactic halo
• The Growth and Structure of Dark Matter Haloes
• The Effect of Gas Cooling on the Shapes of Dark Matter Halos
• Limits on spin-independent WIMP-nucleon interactions from the two-tower run of the Cryogenic Dark Matter Search
• Properties of spherical galaxies and clusters with an NFW density profile
• Generating Equilibrium Dark Matter Halos: Inadequacies of the Local Maxwellian Approximation
• Masses for the Local Group and the Milky Way
• Limits on WIMP dark matter using scintillating CaWO4 cryogenic detectors with active background suppression
• Dark Matter particles in the galactic halo: results and implications from DAMA/NaI
• Dark Matter Direct Detection with Non-Maxwellian Velocity Structure
• Phase-space structure in the local dark matter distribution and its signature in direct detection experiments
• A universal density slope - velocity anisotropy relation for relaxed structures
• Inelastic Dark Matter in Light of DAMA/LIBRA
• CoGeNT Interpretations
• The Mass of the Milky Way Galaxy
• Effect of the galactic halo modeling on the DAMA/NaI annual modulation result: an extended analysis of the data for WIMPs with a purely spin-independent coupling
• The Astrophysical Uncertainties Of Dark Matter Direct Detection Experiments
• Galactic masers and the Milky Way circular velocity
• The Mass Profile of the Galaxy to 80 kpc
• Spin-independent elastic WIMP scattering and the DAMA annual modulation signal
• Implications of CoGeNT and DAMA for Light WIMP Dark Matter
• Dark Matter Direct Detection Signals inferred from a Cosmological N-body Simulation with Baryons
• Constraints on inelastic dark matter from XENON10
• Galactic Halo Models and Particle Dark-Matter Detection
• Systematic uncertainties in the determination of the local dark matter density
• The phase-space structure of a dark-matter halo: Implications for dark-matter direct detection experiments
• Galactic Substructure and Direct Detection of Dark Matter
• DAMA and WIMP dark matter
• Limits on spin-dependent WIMP-nucleon interactions from the Cryogenic Dark Matter Search
• Velocity distributions and annual-modulation signatures of weakly-interacting massive particles
• The Ultimate Halo Mass in a LCDM Universe
• Are mergers responsible for universal halo properties?
• Semi-analytical dark matter halos and the Jeans equation
• Dark matter distribution function from non-extensive statistical mechanics
• Reconstructing WIMP Properties in Direct Detection Experiments Including Galactic Dark Matter Distribution Uncertainties
• Dependence of direct detection signals on the WIMP velocity distribution
• Statistical mechanics of collisionless orbits. I. Origin of central cusps in dark-matter halos
• Distribution function of the dark matter
• Compatibility of DAMA/LIBRA dark matter detection with other searches in light of new Galactic rotation velocity measurements
• Determining the WIMP mass from a single direct detection experiment, a more detailed study
• Dark matter in the solar system III: The distribution function of WIMPs at the Earth from gravitational capture
• Dark matter density profiles from the Jeans equation
• Mapping the allowed parameter space for decaying dark matter models
• Direct detection of WIMPs : Implications of a self-consistent truncated isothermal model of the Milky Way's dark matter halo
• A universal velocity distribution of relaxed collisionless structures
• Fine Structure of Dark Matter Halos and its Effect on Terrestrial Detection Experiments
• Statistical mechanics of collisionless orbits. II. Structure of halos
• Statistical mechanics of collisionless orbits. III. Comparison with N-body simulations
• Might we eventually understand the origin of the dark matter velocity anisotropy?
• The Poker Face of Inelastic Dark Matter: Prospects at Upcoming Direct Detection Experiments
• The Shape of Galaxy Cluster Dark Matter Haloes: Systematics of Its Imprint on Cluster Gas, and Comparison to Observations
• What it takes to measure a fundamental difference between dark matter and baryons: the halo velocity anisotropy
• Direct Dark Matter Detection with Velocity Distribution in the Eddington approach

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• Interpreting Dark Matter Direct Detection Independently of the Local Velocity and Density Distribution
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• Effect of Gravitational Focusing on Annual Modulation in Dark-Matter Direct-Detection Experiments
• PPPC 4 DM$\nu$: A Poor Particle Physicist Cookbook for Neutrinos from DM annihilations in the Sun
• Simulated Milky Way analogues: implications for dark matter indirect searches
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• Global fits of the cMSSM including the first LHC and XENON100 data
• Can CoGeNT and DAMA Modulations Be Due to Dark Matter?
• Dark Shards: velocity substructure from Gaia and direct searches for dark matter
• A novel way of constraining WIMPs annihilations in the Sun: MeV neutrinos
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• Anisotropic dark matter distribution functions and impact on WIMP direct detection
• A new halo-independent approach to dark matter direct detection analysis
• Assessing Astrophysical Uncertainties in Direct Detection with Galaxy Simulations
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• Dark Matter Direct Search Rates in Simulations of the Milky Way and Sagittarius Stream
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• Empirical Determination of Dark Matter Velocities using Metal-Poor Stars
• Implications of CoGeNT's New Results For Dark Matter
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• Fundamental statistical limitations of future dark matter direct detection experiments
• Impact of Dark Matter Velocity Distributions on Capture Rates in the Sun
• Connecting Direct Dark Matter Detection Experiments to Cosmologically Motivated Halo Models
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• Dark Photons from the Center of the Earth: Smoking-Gun Signals of Dark Matter
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• Deriving the velocity distribution of Galactic Dark Matter particles from rotation curve data
• Solar Gamma Ray Constraints on Dark Matter Annihilation to Secluded Mediators
• Complementarity of direct and indirect Dark Matter detection experiments
• Nuclear uncertainties in the spin-dependent structure functions for direct dark matter detection
• Closing in on mass-degenerate dark matter scenarios with antiprotons and direct detection
• Search for inelastic dark matter with the CDMS II experiment
• Studying generalised dark matter interactions with extended halo-independent methods
• The Metal-Poor Stellar Halo in RAVE-TGAS and its Implications for the Velocity Distribution of Dark Matter
• Unbound Particles in Dark Matter Halos
• Return of the X-rays: A New Hope for Fermionic Dark Matter at the keV Scale
• The dark matter component of the Gaia radially anisotropic substructure
• Enhanced Sensitivity to Dark Matter Self-annihilations in the Sun using Neutrino Spectral Information
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• Halo-Independent Direct Detection Analyses Without Mass Assumptions
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• WIMPless dark matter and the excess gamma rays from the Galactic center
• Statistical Tests of Noise and Harmony in Dark Matter Modulation Signals
• New Constraints on Isospin-Violating Dark Matter
• Parametrizing the local dark matter speed distribution: a detailed analysis
• A dark force for baryons
• Implications of the Gaia Sausage for Dark Matter Nuclear Interactions
• Impact of galactic distributions in celestial capture of dark matter
• Direct dark matter searches - Test of the Big Bounce Cosmology
• Halo uncertainties in electron recoil events at direct detection experiments
• An optimistic CoGeNT analysis
• Making sense of the local Galactic escape speed estimates in direct dark matter searches
• Informing dark matter direct detection limits with the ARTEMIS simulations
• Anisotropic q-Gaussian velocity distributions in LambdaCDM halos
• Surrogate Models for Direct Dark Matter Detection
• Simulations of Galaxy Cluster Collisions with a Dark Plasma Component
• A combined analysis of PandaX, LUX, and XENON1T experiments within the framework of dark matter effective theory
• Dark Matter in 3D
• Harmonics in the Dark-Matter Sky: Directional Detection in the Fourier-Bessel Basis
• Discretising the velocity distribution for directional dark matter experiments
• Prospects for discovery and spin discrimination of dark matter in Higgs portal DM models and their extensions at 100 TeV $pp$ collider
• Integrating In Dark Matter Astrophysics at Direct Detection Experiments
• Debris Flows in Direct Dark Matter Searches-The modulation effect
• Revisiting XENON100's Constraints (and Signals?) For Low-Mass Dark Matter
• Velocity independent constraints on spin-dependent DM-nucleon interactions from IceCube and PICO
• Direct Detection Anomalies in light of $Gaia$ Data
• Statistical mechanics of self-gravitating systems: mixing as a criterion for indistinguishability
• Directional dark matter detection sensitivity of a two-phase liquid argon detector
• Scintillating bolometers: a key for determining WIMP parameters
• Sliding into DM: Determining the local dark matter density and speed distribution using only the local circular speed of the Galaxy
• Direct detection data and possible hints for low-mass WIMPs
• DarkCapPy: Dark Matter Capture and Annihilation
• Discrimination of anisotropy in dark matter velocity distribution with directional detectors
• The effect of hydrodynamical simulation inspired dark matter velocity profile on directional detection of dark matter
• Search for Scalar Dark Matter via Pseudoscalar Portal Interactions: In Light of the Galactic Center Gamma-Ray Excess
• Bayesian Reconstruction of the Velocity Distribution of Weakly Interacting Massive Particles from Direct Dark Matter Detection Data
• Constraints on dark matter interactions from the first results of DarkSide-50
• Probing light WIMPs with directional detection experiments
• Bayesian analysis of multiple direct detection experiments
• AMIDAS-II: Upgrade of the AMIDAS Package and Website for Direct Dark Matter Detection Experiments and Phenomenology
• Reconstructing the WIMP Velocity Distribution from Direct Dark Matter Detection Data with a Non-Negligible Threshold Energy
• Boosting (In)direct Detection of Dark Matter
• Impact of Sub-MeV Dark Matter on the Cooling of Pulsating White Dwarfs