Disks in Expanding FRW Universes
A. Feinstein, J. Ib\'a\~nez, R. Lazkoz
TL;DR
This paper presents exact solutions for relativistic disks within expanding FRW universes, demonstrating how cosmic expansion affects their dynamics and properties through specific non-static disk models.
Contribution
It introduces exact solutions for relativistic disks in expanding universes, highlighting the impact of expansion on disk dynamics and structure.
Findings
Expansion influences rotational curves and surface mass density.
Non-static Kuzmin-Curzon and Schwarzschild disks exemplify these effects.
Cosmic expansion alters the dynamical characteristics of relativistic disks.
Abstract
We construct exact solutions to Einstein equations which represent relativistic disks immersed into an expanding FRW Universe. It is shown that the expansion influences dynamical characteristics of the disks such as rotational curves, surface mass density, etc. The effects of the expansion is exemplified with non-static generalizations of Kuzmin-Curzon and generalized Schwarzschild disks.
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