http://arxiv.org/abs/2011.11192
We examine the evolution of peculiar velocities of arrays of inhomogeneous cosmic structures in a $\Lambda$CDM background identified as a comoving CMB frame. These arrays are constructed by smoothly matching to this cosmological background regions of Szekeres-II models with their imperfect fluid energy–momentum tensor reinterpreted as non-comoving dust, keeping only first order terms in $v/c$. We find a peculiar velocity field with magnitudes compatible with values reported in the literature. We obtain a a contrast of the Hubble scalar of the same order of magnitude of the current tension on $H_0$. While the models cannot describe the virialization process, we show through a representative example that structures of galactic cluster mass reach the onset of this process at redshifts around $z\sim 3$.
S. Nájera and R. Sussman
Tue, 24 Nov 2020
15/83
Comments: 15 pages, 7 figures
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