Strong Constraints on Fuzzy Dark Matter from Ultrafaint Dwarf Galaxy Eridanus II

Abstract

The fuzzy dark matter (FDM) model treats DM as a bosonic field with astrophysically large de Broglie wavelength. A striking feature of this model is $\mathcal{O}(1)$ fluctuations in the dark matter density on time scales which are shorter than the gravitational timescale. Including for the first time the effect of core oscillations, we demonstrate how such fluctuations lead to heating of star clusters, and thus an increase in their size over time. From the survival of the old star cluster in Eridanus II we infer $m_a\gtrsim 0.6\to 1\times 10^{-19}\text{ eV}$ within modelling uncertainty if FDM is to compose all of the DM, and derive constraints on the FDM fraction at lower masses. The subhalo mass function in the Milky Way implies $m_a\gtrsim 0.8\times 10^{-21}\text{ eV}$ to successfully form Eridanus II. The window between $10^{-21}\text{ eV}\lesssim m_a\lesssim 10^{-20}\text{ eV}$ is affected by narrow band resonances, and the limited applicability of the diffusion approximation. Some of this window may be consistent with observations of Eridanus II and more detailed investigations are required.

6 pages, 2 figures; v2 comments and clarifications added, matches version accepted for publication in PRL

References in corpus (14)

• Big-Bang Nucleosynthesis
• Ultralight scalars as cosmological dark matter
• Cosmic Structure as the Quantum Interference of a Coherent Dark Wave
• Understanding the Core-Halo Relation of Quantum Wave Dark Matter, $\psi$DM, from 3D Simulations
• Axion dark matter, solitons, and the cusp-core problem
• Evidence for dark matter in the inner Milky Way
• Search for axion-like dark matter through nuclear spin precession in electric and magnetic fields
• Galaxy UV-luminosity function and reionization constraints on axion dark matter
• Farthest Neighbor: The Distant Milky Way Satellite Eridanus II
• Lyman-$\alpha$ forest and non-linear structure characterization in Fuzzy Dark Matter cosmologies
• Relaxation in a Fuzzy Dark Matter Halo
• Substructure of fuzzy dark matter haloes
• Heating of Milky Way disc Stars by Dark Matter Fluctuations in Cold Dark Matter and Fuzzy Dark Matter Paradigms
• Core-halo mass relation of ultralight axion dark matter from merger history

Cited by in corpus (129)

• Ultra-Light Dark Matter
• Wave Dark Matter
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons
• Recent Progress in the Physics of Axions and Axion-Like Particles
• First star-forming structures in fuzzy cosmic filaments
• Stochastic fluctuations of bosonic dark matter
• Boson Stars and Oscillatons: A Review
• New insights into the formation and growth of boson stars in dark matter halos
• The Subhalo Mass Function and Ultralight Bosonic Dark Matter
• Probing the Small-Scale Matter Power Spectrum with Large-Scale 21-cm Data
• AxioNyx: Simulating Mixed Fuzzy and Cold Dark Matter
• Axion Quasiparticles for Axion Dark Matter Detection
• Looking for ultralight dark matter near supermassive black holes
• Fuzzy Dark Matter and Dark Matter Halo Cores
• Ultra-light dark matter in disk galaxies
• Kilobyte Cosmic Birefringence from ALP Domain Walls
• A model for core formation in dark matter haloes and ultra diffuse galaxies by outflow episodes
• Soliton Random Walk and the Cluster-Stripping Problem in Ultralight Dark Matter
• Constraints on millicharged dark matter and axion-like particles from timing of radio waves
• Narrowing the mass range of Fuzzy Dark Matter with Ultra-faint Dwarfs
• Galactic rotation curves versus ultralight dark matter: A systematic comparison with SPARC data
• Oscillations and Random Walk of the Soliton Core in a Fuzzy Dark Matter Halo
• Heterodyne Broadband Detection of Axion Dark Matter
• Measuring the stability of fundamental constants with a network of clocks
• Dark matter from scalar field fluctuations
• Vortices and waves in light dark matter
• Fuzzy Dark Matter and the Dark Energy Survey Year 1 Data
• Instability of rotating Bose stars
• Construction of Wave Dark Matter Halos: Numerical Algorithm and Analytical Constraints
• Fuzzy Dark Matter and the 21cm Power Spectrum
• Ghostly Galaxies as Solitons of Bose-Einstein Dark Matter
• Secular effects of Ultralight Dark Matter on Binary Pulsars
• Spatially Resolved Stellar Kinematics of the Ultra-Diffuse Galaxy Dragonfly 44: II. Constraints on Fuzzy Dark Matter
• On the Random Motion of Nuclear Objects in a Fuzzy Dark Matter Halo
• Eridanus II: A Fossil from Reionization with an Off-Center Star Cluster
• Soliton Oscillations and Revised Constraints from Eridanus II of Fuzzy Dark Matter
• Fate of scalar dark matter solitons around supermassive galactic black holes
• Fuzzy Dark Matter Candidates from String Theory
• Closing the window on fuzzy dark matter with the 21cm signal
• Multiple Ultralight Axionic Wave Dark Matter and Astronomical Structures
• Deep zoom-in simulation of a fuzzy dark matter galactic halo
• The effect of fluctuating fuzzy axion haloes on stellar dynamics: a stochastic model
• Multiple Images and Flux Ratio Anomaly of Fuzzy Gravitational Lenses
• Landau equation for self-gravitating classical and quantum particles: Application to dark matter
• Implications of Milky Way Substructures for the Nature of Dark Matter
• The star formation history of Eridanus II: on the role of SNe feedback in the quenching of ultra-faint dwarf galaxies
• Dwarf galaxies imply dark matter is heavier than $2.2\times 10^{-21}\mathbf{eV}$
• Dynamical Friction in fuzzy dark matter: circular orbits
• Sliding Naturalness
• Multifield Ultralight Dark Matter
• Schrödinger-Poisson Solitons: Perturbation Theory
• Fuzzy Dark Matter as a Solution to Reconcile the Stellar Mass Density of High-z Massive Galaxies and Reionization History
• Sliding Naturalness: Cosmological Selection of the Weak Scale
• Dynamical Friction From Ultralight Dark Matter
• Confronting fuzzy dark matter with the rotation curves of nearby dwarf irregular galaxies
• The MUSE-Faint survey. II. The dark matter-density profile of the ultra-faint dwarf galaxy Eridanus 2
• On the Dynamical Heating of Dwarf Galaxies in a Fuzzy Dark Matter Halo
• BBN constraints on universally-coupled ultralight scalar dark matter
• Assessing the Fornax globular cluster timing problem in different models of dark matter
• How sound are our ultra-light axion approximations?
• Probing ultra-light axions with the 21-cm Signal during Cosmic Dawn
• Constraints on Ultralight Scalar Dark Matter with Quadratic Couplings
• Dark matter profiles of SPARC galaxies: a challenge to fuzzy dark matter
• The Core-Cusp Problem Revisited: ULDM vs. CDM
• Gravitational lensing $H_0$ tension from ultralight axion galactic cores
• Pulsar timing array constraints on spin-2 ULDM
• Searching for ultralight scalar dark matter with muonium and muonic atoms
• Post-inflationary axions: a minimal target for axion haloscopes
• Relaxation in a Fuzzy Dark Matter Halo. II. Self-consistent kinetic equations
• Self-interactions of ULDM to the rescue?
• Variable stars in Local Group Galaxies -- V. The fast and early evolution of the low-mass Eridanus II dSph galaxy
• Post-inflationary axion isocurvature perturbations facing CMB and large-scale structure
• Investigation of two colliding solitonic cores in Fuzzy Dark Matter models
• Connecting the Extremes: A Story of Supermassive Black Holes and Ultralight Dark Matter
• Binary Pulsars as probes for Spin-2 Ultralight Dark Matter
• Detecting Ultralight Dark Matter Gravitationally with Laser Interferometers in Space
• Ejection of supermassive black holes and implications for merger rates in fuzzy dark matter haloes
• An Analytic Approach to Light Dark Matter Propagation
• Gravitational waves from binary black holes in a self-interacting scalar dark matter cloud
• Can ultralight dark matter explain the age-velocity dispersion relation of the Milky Way disc: A revised and improved treatment
• Supersonic friction of a black hole traversing a self-interacting scalar dark matter cloud
• The Milky Way, Coming into Focus: Precision Astrometry Probes its Evolution, and its Dark Matter
• Probing ultralight scalar, vector and tensor dark matter with pulsar timing arrays
• Constraints on conformal ultralight dark matter couplings from the European Pulsar Timing Array
• Detecting dark matter oscillations with gravitational waveforms
• Non-sphericity of ultralight axion dark matter haloes in the Galactic dwarf spheroidal galaxies
• Nested solitons in two-field fuzzy dark matter
• The MUSE-Faint survey: I. Spectroscopic evidence for a star cluster in Eridanus 2 and constraints on MACHOs as a constituent of dark matter
• Diverse dark matter haloes in Two-field Fuzzy Dark Matter
• Virialized Profiles and Oscillations of Self-interacting Fuzzy Dark Matter Solitons
• Axion oscillations in binary systems: angle-action surgery
• Tidal Suppression of Fuzzy Dark Matter Heating in Milky Way Satellite Galaxies
• Constraining Ultra-light Axions with Galaxy Cluster Number Counts
• Field-theoretic approach to large-scale structure formation
• When quantum corrections alter the predictions of classical field theory for scalar field dark matter
• Evolution of perturbation and power spectrum in a two-component ultralight axionic universe
• Prospects for disentangling dark matter with weak lensing
• One-parametric description for scalar field dark matter potentials
• Astrophysical Searches and Constraints on Ultralight Bosonic Dark Matter
• Theory and phenomenology of stressed wave-dark-matter soliton
• Properties of Ultralight Bosons from Spins of Heavy Quasars via Superradiance
• Dynamical friction in ultralight dark matter: Plummer sphere perspective
• Fuzzy dark matter simulations
• An Emergent Solution to the Strong CP Problem
• On particle scattering in Gross-Pitaevskii theory and implications for dark matter halos
• Interpreting the Extremely Diffuse Stellar Distribution of the Nube Galaxy through Fuzzy Dark Matter
• Parametric-resonance based phenomenology of gravitating axion configurations
• Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions
• Gravitational Wave Resonance in Ultra-Light Dark Matter Halos
• Interference in Fuzzy Dark Matter Filaments: Idealised Models and Statistics
• Unveiling Orbital Chaos: The Wild Heart of Fuzzy Dark Matter Structures
• Accretion, Evaporation and Superradiance Phase Diagram of (Primordial) Black Holes and $10^{-21}-10^{21}$ eV Scalar, Vector, Tensor Fields
• EDGES of the dark forest: A new absorption window into the composite dark matter and large scale structure
• Lensed fast radio bursts as a probe of time-varying gravitational potential induced by wave dark matter
• Detectability of Massive Boson Stars using Gravitational Waves from Fundamental Oscillations
• How light can ALP dark matter be?
• Layout optimization for the LUXE-NPOD experiment
• A new probe of dark matter-baryon interactions in compact stellar systems
• Crossing the dark matter soliton core: a possible reversed orbital precession
• To observe, or not to observe, quantum-coherent dark matter in the Milky Way, that is a question
• Constraining Axion Dark Matter with Galactic-Centre Resonant Dynamics
• Collective Excitations of Self-Gravitating Ultralight Dark Matter Cores
• Exploration of simple scenarios involving Fuzzy Dark Matter cores and gas at local scales
• Cosmological structure formation in complex scalar field dark matter versus real ultralight axions: a comparative study using CLASS
• Integrating factor techniques applied to the Schrödinger-like equations. Comparison with Split-Step methods
• Exploring delaying and heating effects on the 21-cm signature of fuzzy dark matter
• Uncertainty-Aware Neural Networks for Fuzzy Dark Matter Model Selection from \texorpdfstring{$x_{\mathrm{HI}}$}{x_HI} Measurements
• A Fuzzy Situation Eased: Cold Dark Matter with Multipoles Can Explain The Double Radio Quad Lens HS 0810+2554