Deep zoom-in simulation of a fuzzy dark matter galactic halo

Abstract

Fuzzy dark matter (FDM) made of ultra-light bosonic particles is a viable alternative to cold dark matter (CDM) with clearly distinguishable small-scale features in collapsed structures. On large scales, it behaves gravitationally like CDM deviating only by a cut-off in the initial power spectrum and can be studied using N-body methods. In contrast, wave interference effects near the de Broglie scale result in new phenomena unique to FDM. Interfering modes in filaments and halos yield a stochastically oscillating granular structure which condenses into solitonic cores during halo formation. Investigating these highly non-linear wave phenomena requires the spatially resolved numerical integration of the Schrödinger equation. In previous papers we introduced a hybrid zoom-in scheme that combines N-body methods to model the large-scale gravitational potential around and the mass accretion onto pre-selected halos with simulations of the Schrödinger-Poisson equation to capture wave-like effects inside these halos. In this work, we present a new, substantially improved reconstruction method for the wave function inside of previously collapsed structures. We demonstrate its capabilities with a deep zoom-in simulation of a well-studied sub-$L_{\ast }$-sized galactic halo from cosmological intitial conditions. With a particle mass of $m=2.5\times 10^{-22}$eV and halo mass $M_{\text{vir}}=1.7\times 10^{11}{M}_{\odot }$ in a ($60$h${}^{-1}$ comoving Mpc)${}^3$ cosmological box, it reaches an effective resolution of 20 comoving pc. This pushes the values of $m$ and $M$ accessible to simulations significantly closer to those relevant for studying galaxy evolution in the allowed range of FDM masses.

5 pages, 5 figures

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Cited by in corpus (29)

• Symphony: Cosmological Zoom-in Simulation Suites over Four Decades of Host Halo Mass
• Quantum fluctuations masquerade as halos: Bounds on ultra-light dark matter from quadruply-imaged quasars
• The halo mass function and filaments in full cosmological simulations with fuzzy dark matter
• Coherent and incoherent structures in fuzzy dark matter halos
• Axion minivoids and implications for direct detection
• On the Dynamical Heating of Dwarf Galaxies in a Fuzzy Dark Matter Halo
• Dark matter profiles of SPARC galaxies: a challenge to fuzzy dark matter
• Probing ultra-light axions with the 21-cm Signal during Cosmic Dawn
• Astrophysical Tests of Dark Matter Self-Interactions
• The Effect of Boundary Conditions on Structure Formation in Fuzzy Dark Matter
• COZMIC. I. Cosmological Zoom-in Simulations with Initial Conditions Beyond Cold Dark Matter
• Galactic Rotation Curves of LSB Galaxies using core-halo FDM configurations
• Bracketing the soliton-halo relation of ultralight dark matter
• Fermion-Boson Stars as Attractors in Fuzzy Dark Matter and Ideal Gas Dynamics
• Construction and evolution of equilibrium configurations of the Schrödinger-Poisson system in the Madelung frame
• Tidal Suppression of Fuzzy Dark Matter Heating in Milky Way Satellite Galaxies
• Post-inflationary structure formation boosted by parametric self-resonance
• Fuzzy dark matter simulations
• Black Holes as Condensation Points of Fuzzy Dark Matter Cores
• Unveiling Orbital Chaos: The Wild Heart of Fuzzy Dark Matter Structures
• Interference in Fuzzy Dark Matter Filaments: Idealised Models and Statistics
• Comparison of two different integration methods for the (1+1)-Dimensional Schrödinger-Poisson Equation
• Equilibrium Core and Vortex Solutions of Bose Einstein Condensate Dark Matter around a Black Hole
• Super-resolution simulation of the Fuzzy Dark Matter cosmological model
• Effects of Self-Interaction and of an Ideal Gas in Binary Mergers of Bosonic Dark Matter Cores
• Self-similar kinetics for gravitational Bose-Einstein condensation
• Temporal Correlations Between Fuzzy Dark Matter and Baryonic Matter in Virialized Core-Halo Structures
• 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