Soliton Random Walk and the Cluster-Stripping Problem in Ultralight Dark Matter

Abstract

Simulations of ultralight, $\sim 10^{-22}\mathrm{eV}$, bosonic dark matter exhibit rich wave-like structure, including a soliton core within a surrounding halo that continuously self-interferes on the de Broglie scale. We show here that as an inherent consequence, the soliton undergoes a confined random walk at the base of the halo potential. This is significant for the fate of the ancient central star cluster in Eridanus II, as the agitated soliton gravitationally shakes the star cluster in and out of the soliton on a time scale of $\sim 100\mathrm{Myr}$, so complete tidal disruption of the star cluster can occur within $\sim 1\mathrm{Gyr}$. This destructive effect can be mitigated by tidal stripping of the halo of Eridanus II, thereby reducing the agitation, depending on its orbit around the Milky Way. Our simulations show the Milky Way tide affects the halo much more than the soliton, so the star cluster in Eridanus II can survive for over $5\mathrm{Gyr}$ within the soliton if it formed after significant halo stripping.

arXiv commentAccepted for publication in Phys. Rev. Lett. 6 pages, 4 figures

References in corpus (32)

• Axion Cosmology
• Cold and Fuzzy Dark Matter
• Ultralight scalars as cosmological dark matter
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• 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
• Fluid Dark Matter
• Repulsive Dark Matter
• Constraints on MACHO Dark Matter from Compact Stellar Systems in Ultra-Faint Dwarf Galaxies
• A Further Analysis of a Cosmological Model of Quintessence and Scalar Dark Matter
• Gaia DR2 Proper Motions of Dwarf Galaxies within 420 kpc: Orbits, Milky Way Mass, Tidal Influences, Planar Alignments, and Group Infall
• A Model For Halo Formation With Axion Mixed Dark Matter
• Strong Constraints on Fuzzy Dark Matter from Ultrafaint Dwarf Galaxy Eridanus II
• Galactic Rotation Curves vs. Ultra-Light Dark Matter: Implications of the Soliton -- Host Halo Relation
• Farthest Neighbor: The Distant Milky Way Satellite Eridanus II
• Relaxation in a Fuzzy Dark Matter Halo
• Ultra-Light Dark Matter in Ultra-Faint Dwarf Galaxies
• Jeans Analysis for Dwarf Spheroidal Galaxies in Wave Dark Matter
• Deep imaging of Eridanus II and its lone star cluster
• Dynamical Friction in a Fuzzy Dark Matter Universe
• Rotation curves of high-resolution LSB and SPARC galaxies with fuzzy and multistate (ultra-light boson) scalar field dark matter
• On the mass of ultra-light bosonic dark matter from galactic dynamics
• GAMER-2: a GPU-accelerated adaptive mesh refinement code -- accuracy, performance, and scalability
• Heating of Milky Way disc Stars by Dark Matter Fluctuations in Cold Dark Matter and Fuzzy Dark Matter Paradigms
• Proper motions of Milky Way Ultra-Faint satellites with $Gaia$ DR2 $\times$ DES DR1
• Scalar Field Dark Matter: Helping or Hurting Small-Scale Problems in Cosmology?
• Recognising Axionic Dark Matter by Compton and de-Broglie Scale Modulation of Pulsar Timing
• Ultra-light dark matter in disk galaxies
• Self-consistent construction of virialized wave dark matter halos
• Dynamical Evidence of a Solitonic Core of $10^9{M}_{\odot }$ in the Milky Way
• The effect of fluctuating fuzzy axion haloes on stellar dynamics: a stochastic model
• Testing the Prediction of Fuzzy Dark Matter Theory in the Milky Way Center

Cited by in corpus (48)

• Ultra-Light Dark Matter
• Wave Dark Matter
• 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
• Instability of rotating Bose stars
• Construction of Wave Dark Matter Halos: Numerical Algorithm and Analytical Constraints
• On the Random Motion of Nuclear Objects in a Fuzzy Dark Matter Halo
• Soliton Oscillations and Revised Constraints from Eridanus II of Fuzzy Dark Matter
• Multiple Ultralight Axionic Wave Dark Matter and Astronomical Structures
• Deep zoom-in simulation of a fuzzy dark matter galactic halo
• Multiple Images and Flux Ratio Anomaly of Fuzzy Gravitational Lenses
• Implications of Milky Way Substructures for the Nature of Dark Matter
• Dwarf galaxies imply dark matter is heavier than $2.2\times 10^{-21}\mathbf{eV}$
• Multifield Ultralight Dark Matter
• Schrödinger-Poisson Solitons: Perturbation Theory
• Soliton Formation and the Core-Halo Mass Relation: An Eigenstate Perspective
• Coherent and incoherent structures in fuzzy dark matter halos
• On the Dynamical Heating of Dwarf Galaxies in a Fuzzy Dark Matter Halo
• Cosmological Simulations of Two-Component Wave Dark Matter
• Connecting the Extremes: A Story of Supermassive Black Holes and Ultralight Dark Matter
• Can ultralight dark matter explain the age-velocity dispersion relation of the Milky Way disc: A revised and improved treatment
• Analytical approach to core-halo structure of fuzzy dark matter
• Galactic disc heating by density granulation in fuzzy dark matter simulations
• Stationary solutions of the Schrödinger-Poisson-Euler system and their stability
• Incoherent localized structures and hidden coherent solitons from the gravitational instability of the Schrödinger-Poisson equation
• Diverse dark matter haloes in Two-field Fuzzy Dark Matter
• Virialized Profiles and Oscillations of Self-interacting Fuzzy Dark Matter Solitons
• Coherent soliton states hidden in phase-space and stabilized by gravitational incoherent structures
• Tidal Suppression of Fuzzy Dark Matter Heating in Milky Way Satellite Galaxies
• Understanding the "Feeble Giant" Crater II with tidally stretched Wave Dark Matter
• Evolution of perturbation and power spectrum in a two-component ultralight axionic universe
• Astrophysical Searches and Constraints on Ultralight Bosonic Dark Matter
• Theory and phenomenology of stressed wave-dark-matter soliton
• Fuzzy dark matter simulations
• Galaxy formation with wave/fuzzy dark matter: The core-halo structure and the solitonic imprint
• Signatures of Fuzzy Dark Matter Inside Radial Critical Curves
• Interpreting the Extremely Diffuse Stellar Distribution of the Nube Galaxy through Fuzzy Dark Matter
• Dynamical reconstruction of SPARC galactic halos within self-interacting fuzzy dark matter
• Unveiling Orbital Chaos: The Wild Heart of Fuzzy Dark Matter Structures
• The Effective Field Theory of Large Scale Structures of a Fuzzy Dark Matter Universe
• Bose-Einstein Condensate Dark Matter That Involves Composites
• Construction of fuzzy dark matter halos with arbitrary initial velocities
• Collective Excitations of Self-Gravitating Ultralight Dark Matter Cores
• Constraining Axion Dark Matter with Galactic-Centre Resonant Dynamics
• Mapping the Distorted Dark Matter Distribution of the LMC-SMC System Prior to Milky Way Infall with Basis Function Expansions
• Tidal disruption of solitons in self-interacting ultralight axion dark matter
• Exploration of simple scenarios involving Fuzzy Dark Matter cores and gas at local scales