Year: 2025
Type: article
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 significantly large ratio of the Plummer sphere radius to its orbital radius as well as for large values of the Mach number.
Source: Physica Scripta
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4411986964