Dynamical friction in ultralight dark matter: Plummer sphere perspective
arXiv:2412.15428 · doi:10.1088/1402-4896/adebb7
Abstract
In models of dark matter composed of feebly interacting ultralight bosons in the state of Bose-Einstein condensate, the dynamical friction force acting on circularly moving globular clusters modelled as Plummer spheres is determined. Analytic expressions for both radial and tangential components of the dynamical friction force are given. We reveal that the dynamical friction force for the Plummer sphere deviates from that for a point probe of the same mass for a significantly large ratio of the Plummer sphere radius to its orbital radius, as well as for large values of the Mach number.
13 pages, 5 figures
References in corpus (21)
- Ultralight scalars as cosmological dark matter
- Wave Dark Matter
- The distribution of dark matter in galaxies
- What is a globular cluster? An observational perspective
- Strong Constraints on Fuzzy Dark Matter from Ultrafaint Dwarf Galaxy Eridanus II
- Small-scale structure of fuzzy and axion-like dark matter
- Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
- Hybrid Boltzmann Gross-Pitaevskii Theory of Bose-Einstein Condensation and Superfluidity in Open Driven-Dissipative Systems
- A predictive model of BEC dark matter halos with a solitonic core and an isothermal atmosphere
- Dynamical friction of bodies orbiting in a gaseous sphere
- Dynamical Friction of Double Perturbers in a Gaseous Medium
- Dynamical Friction in Superfluids
- Dynamical Friction in fuzzy dark matter: circular orbits
- Dynamical Friction From Ultralight Dark Matter
- Spectroscopic Confirmation of the Sixth Globular Cluster in the Fornax Dwarf Spheroidal Galaxy
- The Effect of Boundary Conditions on Structure Formation in Fuzzy Dark Matter
- Subsonic accretion and dynamical friction for a black hole moving through a self-interacting scalar dark matter cloud
- Dynamical friction in Bose-Einstein condensed self-interacting dark matter at finite temperatures, and the Fornax dwarf spheroidal
- Landau versus Spin Superfluidity in Spinor Bose-Einstein Condensates
- Dynamical friction in self-interacting ultralight dark matter
- Dynamical friction in rotating ultralight dark matter galactic cores