Collective Excitations of Self-Gravitating Ultralight Dark Matter Cores
arXiv:2501.06891 · doi:10.1016/j.dark.2025.101973
Abstract
A distinctive feature of ultralight bosonic dark matter is its ability to form a Bose-Einstein condensate with a dense, stationary configuration at the center of galactic halos. In this work, we investigate the internal dynamics of such cores by numerically solving the Bogoliubov-de Gennes equations within a fully self-consistent gravitational framework, accounting for both gravitational potential perturbations and local self-interactions. We demonstrate that the solitonic core supports a discrete spectrum of well-defined collective modes. These oscillations characterize the linear response of the core to perturbations and may influence various dynamical processes. We also discuss potential astrophysical implications of these excitations on galactic scales.
arXiv comment10 pages 5 figures
References in corpus (35)
- Cold and Fuzzy Dark Matter
- Ultralight scalars as cosmological dark matter
- Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: I. Analytical results
- Galaxy Formation with BECDM: I. Turbulence and relaxation of idealised haloes
- Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: II. Numerical results
- Stable Vortex Solitons in Nonlocal Self-Focusing Nonlinear Media
- Finite temperature excitations of a trapped Bose gas
- Formation and structure of ultralight bosonic dark matter halos
- Strong Constraints on Fuzzy Dark Matter from Ultrafaint Dwarf Galaxy Eridanus II
- Evolution of the Schrödinger--Newton system for a self--gravitating scalar field
- Beyond Mean-Field Low-Lying Excitations of Dipolar Bose Gases
- Collapse of a self-gravitating Bose-Einstein condensate with attractive self-interaction
- Self-consistent construction of virialized wave dark matter halos
- Soliton Random Walk and the Cluster-Stripping Problem in Ultralight Dark Matter
- Oscillations and Random Walk of the Soliton Core in a Fuzzy Dark Matter Halo
- A predictive model of BEC dark matter halos with a solitonic core and an isothermal atmosphere
- 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
- Finite temperature effects in Bose-Einstein Condensed dark matter halos
- Gravitational atoms: general framework for the construction of multistate axially symmetric solutions of the Schrödinger-Poisson system
- Jeans mass-radius relation of self-gravitating Bose-Einstein condensates and typical parameters of the dark matter particle
- Path-Integral Ground-State and Superfluid Hydrodynamics of a Bosonic Gas of Hard Spheres
- Coherent and incoherent structures in fuzzy dark matter halos
- Modifying PyUltraLight to model scalar dark matter with self-interactions
- Stable vortex in Bose-Einstein condensate dark matter
- Stable vortex structures in colliding self-gravitating Bose-Einstein condensates
- Galactic Rotation Curves of LSB Galaxies using core-halo FDM configurations
- Dynamical galactic effects induced by stable vortex structure in bosonic dark matter
- Solitons and halos for self-interacting scalar dark matter
- Virialized Profiles and Oscillations of Self-interacting Fuzzy Dark Matter Solitons
- On the linear stability of nonrelativistic selfinteracting boson stars
- Spherical solutions of the Schrödinger-Poisson system with core-tail structure
- Collective Excitations of Self-Gravitating Bose-Einstein Condensates: Breathing Mode and Appearance of Anisotropy under Self-Gravity
- Vortex Lines in Ultralight Bosonic Dark Matter around Rotating Supermassive Black Holes