Exploration of simple scenarios involving Fuzzy Dark Matter cores and gas at local scales

Abstract

We introduce a tool that solves the Schrödinger-Euler-Poisson system of equations and allows the study of the interaction between ultralight bosonic dark matter, whose dynamics is described with the Schrödinger-Poisson system and luminous matter which, as a first approximation, is modeled with a single component compressible ideal fluid. The two matter fields are coupled through the Poisson equation, whose source is the addition of both, dark matter and fluid densities. We describe the numerical methods used to solve the system of equations and present tests for each of the two components, that show the accuracy and convergence properties of the code. As simple possible applications we present some toy scenarios: i) the merger between a core of dark matter with a cloud of gas, ii) the merger of bosonic dark matter plus fluid configurations, and iii) the post merger properties, including the dark-matter offset from gas and the correlation between oscillations of the bosonic core and those of the gas.

13 pages, 17 figures

References in corpus (18)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• 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
• Wave Dark Matter
• Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87*
• First star-forming structures in fuzzy cosmic filaments
• Substructure of fuzzy dark matter haloes
• Oscillations and Random Walk of the Soliton Core in a Fuzzy Dark Matter Halo
• Construction of Wave Dark Matter Halos: Numerical Algorithm and Analytical Constraints
• Core-halo mass relation of ultralight axion dark matter from merger history
• Deep zoom-in simulation of a fuzzy dark matter galactic halo
• Core-Envelope Haloes in Scalar Field Dark Matter with Repulsive Self-Interaction: Fluid Dynamics Beyond the de Broglie Wavelength
• Cosmological structure formation in scalar field dark matter with repulsive self-interaction: The Incredible Shrinking Jeans Mass
• Halo Abundance and Assembly History with Extreme-Axion Wave Dark Matter at $z\ge 4$
• Investigation of two colliding solitonic cores in Fuzzy Dark Matter models
• CAFE-R a code that solves the special relativistic radiation hydrodynamics equations
• How do scalar-field dark matter haloes react to orbiting bodies?