Lensing constraints on ultradense dark matter halos

Abstract

Cosmological observations precisely measure primordial variations in the density of the Universe at megaparsec and larger scales, but much smaller scales remain poorly constrained. However, sufficiently large initial perturbations at small scales can lead to an abundance of ultradense dark matter minihalos that form during the radiation epoch and survive into the late-time Universe. Because of their early formation, these objects can be compact enough to produce detectable microlensing signatures. We investigate whether the EROS, OGLE, and HSC surveys can probe these halos by fully accounting for finite source size and extended lens effects. We find that current data may already constrain the amplitudes of primordial curvature perturbations in a new region of parameter space, but this conclusion is strongly sensitive to yet undetermined details about the internal structures of these ultradense halos. Under optimistic assumptions, current and future HSC data would constrain a power spectrum that features an enhancement at scales $k\sim 10^7/\mathrm{Mpc}$, and an amplitude as low as ${\mathcal{P}}_{\zeta }\simeq 10^{-4}$ may be accessible. This is a particularly interesting regime because it connects to primordial black hole formation in a portion of the LIGO/Virgo/Kagra mass range and the production of scalar-induced gravitational waves in the nanohertz frequency range reachable by pulsar timing arrays. These prospects motivate further study of the ultradense halo formation scenario to clarify their internal structures.

arXiv comment17 pages, 10 figures. v2: matching published version

References in corpus (123)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• Planck 2018 results. X. Constraints on inflation
• Axion Cosmology
• MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Cold and Fuzzy Dark Matter
• Did LIGO detect dark matter?
• Concentrations of Dark Halos from their Assembly Histories
• Science Case for the Einstein Telescope
• Constraints on Primordial Black Holes
• Halo Formation in Warm Dark Matter Models
• Dark Matter Self-interactions and Small Scale Structure
• Small Scale Cosmological Perturbations: An Analytic Approach
• Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
• Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -
• PPPC 4 DM ID: A Poor Particle Physicist Cookbook for Dark Matter Indirect Detection
• Formation of Supermassive Black Holes
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
• Density Perturbations and Black Hole Formation in Hybrid Inflation
• The cosmological gravitational wave background from primordial density perturbations
• Second-Order Cosmological Perturbations from Inflation
• LCDM-based models for the Milky Way and M31 I: Dynamical Models
• Primordial Black Holes as a dark matter candidate
• Semianalytic Calculation of Gravitational Wave Spectrum Nonlinearly Induced from Primordial Curvature Perturbations
• Microlensing constraints on primordial black holes with the Subaru/HSC Andromeda observation
• Massive Primordial Black Holes from Hybrid Inflation as Dark Matter and the seeds of Galaxies
• The merger rate of primordial-black-hole binaries
• Constraints on Earth-mass primordial black holes from OGLE 5-year microlensing events
• The Circular Velocity Curve of the Milky Way from $5$ to $25$ kpc
• A Cosmological Signature of the SM Higgs Instability: Gravitational Waves
• The Panchromatic Hubble Andromeda Treasury
• The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
• The Milky Way total mass profile as inferred from Gaia DR2
• Steepest growth of the power spectrum and primordial black holes
• On the evidence for a common-spectrum process in the search for the nanohertz gravitational-wave background with the Parkes Pulsar Timing Array
• No large population of unbound or wide-orbit Jupiter-mass planets
• Formation and Evolution of Primordial Black Hole Binaries in the Early Universe
• Threshold for primordial black holes: Dependence on the shape of the cosmological perturbations
• NANOGrav Hints to Primordial Black Holes as Dark Matter
• CMB polarization from secondary vector and tensor modes
• General Relativistic Dynamics of Irrotational Dust: Cosmological Implications
• Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search
• Primordial Black Holes as Generators of Cosmic Structures
• The origins of massive black holes
• Cosmic microwave background bounds on primordial black holes including dark matter halo accretion
• Femtolensing by Dark Matter Revisited
• Particle Models and the Small-Scale Structure of Dark Matter
• Did NANOGrav see a signal from primordial black hole formation?
• The power spectrum of SUSY-CDM on sub-galactic scales
• The Panchromatic Hubble Andromeda Treasury X. Ultraviolet to Infrared Photometry of 117 Million Equidistant Stars
• Cosmic Conundra Explained by Thermal History and Primordial Black Holes
• The Threshold for Primordial Black Hole Formation: a Simple Analytic Prescription
• Revisiting constraints on asteroid-mass primordial black holes as dark matter candidates
• Effects of cold dark matter decoupling and pair annihilation on cosmological perturbations
• Primordial black holes with an accurate QCD equation of state
• The Mass Profile and Accretion History of Cold Dark Matter Halos
• Solar-Mass Primordial Black Holes Explain NANOGrav Hint of Gravitational Waves
• Updated Constraints on Asteroid-Mass Primordial Black Holes as Dark Matter
• Dark Matter Halo Merger Histories Beyond Cold Dark Matter: I - Methods and Application to Warm Dark Matter
• The Ineludible non-Gaussianity of the Primordial Black Hole Abundance
• Large-amplitude isothermal fluctuations and high-density dark-matter clumps
• Searching for a subpopulation of primordial black holes in LIGO/Virgo gravitational-wave data
• Primordial black hole formation and abundance: contribution from the non-linear relation between the density and curvature perturbation
• Non-linear metric perturbations and production of primordial black holes
• A New Probe of Dark Matter and High-Energy Universe Using Microlensing
• Testing scenarios of primordial black holes being the seeds of supermassive black holes by ultracompact minihalos and CMB $\mu$-distortions
• Primordial non-gaussianity up to all orders: theoretical aspects and implications for primordial black hole models
• WIMPs and stellar-mass primordial black holes are incompatible
• Exploring Primordial Black Holes from the Multiverse with Optical Telescopes
• Solving puzzles of GW150914 by primordial black holes
• Structure Formation and Microlensing with Axion Miniclusters
• From inflation to black hole mergers and back again: Gravitational-wave data-driven constraints on inflationary scenarios with a first-principle model of primordial black holes across the QCD epoch
• On the origin of cold dark matter halo density profiles
• Primordial Black Holes as Dark Matter: Almost All or Almost Nothing
• Subaru through a different lens: microlensing by extended dark matter structures
• Distinguishing Primordial Black Holes from Astrophysical Black Holes by Einstein Telescope and Cosmic Explorer
• Anatomy of single-field inflationary models for primordial black holes
• Non-linear statistics of primordial black holes from gaussian curvature perturbations
• Matter power spectrum: from Ly$\alpha$ forest to CMB scales
• Density Profiles of CDM Microhalos and their Implications for Annihilation Boost Factors
• What if Planet 9 is a Primordial Black Hole?
• NANOGrav results and LIGO-Virgo primordial black holes in axion-like curvaton model
• Gravitational Lensing Signatures of Axion Dark Matter Minihalos in Highly Magnified Stars
• PBH formation from spherically symmetric hydrodynamical perturbations: a review
• Density profiles of ultracompact minihalos: Implications for constraining the primordial power spectrum
• Black Holes and WIMPs: All or Nothing or Something Else
• Are ultracompact minihalos really ultracompact?
• A new probe of the small-scale primordial power spectrum: astrometric microlensing by ultracompact minihalos
• Numerical and Perturbative Computations of the Fuzzy Dark Matter Model
• Gravitational microlensing by dark matter in extended structures
• The Need for Speed: Escape velocity and dynamical mass measurements of the Andromeda galaxy
• Prospects for probing gravitational waves from primordial black hole binaries
• Formation and internal structure of superdense dark matter clumps and ultracompact minihaloes
• The Minimum Testable Abundance of Primordial Black Holes at Future Gravitational-Wave Detectors
• The Birth and Growth of Neutralino Haloes
• New Roads to the Small-Scale Universe: Measurements of the Clustering of Matter with the High-Redshift UV Galaxy Luminosity Function
• 3D simulations with boosted primordial power spectra and ultracompact minihalos
• On the wave optics effect on primordial black hole constraints from optical microlensing search
• Inner cusps of the first dark matter haloes: Formation and survival in a cosmological context
• Primordial black hole dark matter from inflation: the reverse engineering approach
• Superdense cosmological dark matter clumps
• Predicting the density profiles of the first halos
• The primordial matter power spectrum on sub-galactic scales
• Annihilation Signatures of Hidden Sector Dark Matter Within Early-Forming Microhalos
• On the single-event-based identification of primordial black hole mergers at cosmological distances
• Primordial Black Holes as Silver Bullets for New Physics at the Weak Scale
• Testing primordial black hole and measuring the Hubble constant with multiband gravitational-wave observations
• Measuring properties of primordial black hole mergers at cosmological distances: effect of higher order modes in gravitational waves
• Microlensing constraints on axion stars including finite lens and source size effects
• Ultracompact minihalos associated with stellar-mass primordial black holes
• Major mergers between dark matter haloes -- II. Profile and concentration changes
• Dark Matter Microhalos in the Solar Neighborhood: Pulsar Timing Signatures of Early Matter Domination
• Hunting for dark halo substructure using submilliarcsecond-scale observations of macrolensed radio jets
• Constraining the primordial curvature perturbation using dark matter substructure
• Implications for Dark Matter Direct Detection in the Presence of LIGO-Motivated Primordial Black Holes
• Primordial black hole dark matter in the presence of p-wave WIMP annihilation
• A Common Origin of Neutralino Stars and Supermassive Black Holes
• Probing the Milky Way stellar and brown dwarf initial mass function with modern microlensing observations

Cited by in corpus (14)

• Search for scalar induced gravitational waves in the International Pulsar Timing Array Data Release 2 and NANOgrav 12.5 years datasets
• Structure formation with primordial black holes: collisional dynamics, binaries, and gravitational waves
• Minihalos as probes of the inflationary spectrum: accurate boost factor calculation and new CMB constraints
• How an era of kination impacts substructure and the dark matter annihilation rate
• Simulations of Gravitational Heating Due to Early Matter Domination
• Gravitational Lensing of Spherically Symmetric Black Holes in Dark Matter Halos
• Primordial Black-Hole-Based Pathways to Little Red Dots
• Implications for Pulsar Timing Arrays of Sub-solar Black Hole Detections: From LVK to Einstein Telescope and Cosmic Explorer
• 21-cm Constraints on Dark Matter Annihilation after an Early Matter-Dominated Era
• Microlensing of dark matter models in the Milky Way
• Structure Formation with Warm White Noise: Effects of Finite Number Density and Velocity Dispersion in Particle and Wave Dark Matter
• Limits on Early Matter Domination from the Isotropic Gamma-Ray Background
• Updated constraints on the primordial power spectrum at sub-Mpc scales
• Detecting dark objects with plasma microlensing by their gravitational wakes