Dynamical friction in ultralight dark matter: Plummer sphere perspective

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...

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Published in:arXiv.org 2024-12
Main Authors: Gorkavenko, V M, Yakimenko, A I, Zaporozhchenko, A O, Gorbar, E V
Format: Article
Language:English
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Bose-Einstein condensates
Bosons
Cluster analysis
Dark matter
Friction
Globular clusters
Mach number
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Yakimenko, A I
Zaporozhchenko, A O
Gorbar, E V
description 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 the significantly large ratio of the Plummer sphere radius to its orbital radius as well as for large values of the Mach number.
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subjects Bose-Einstein condensates
Bosons
Cluster analysis
Dark matter
Friction
Globular clusters
Mach number
title Dynamical friction in ultralight dark matter: Plummer sphere perspective
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