Abstract
Yes. In a perturbed Friedmann model, the difference of the Hubble constants measured in two restframes is independent of the source peculiar velocity and depends only on the relative velocity of the observers, to lowest order in velocity. Therefore this difference should be zero when averaging over sufficient sources, which are at large enough distances to suppress local nonlinear inhomogeneity. We use a linear perturbative analysis to predict the Doppler effects on redshifts and distances. Since the observed redshifts encode the effect of local bulk flow due to nonlinear structure, our linear analysis is able to capture aspects of the nonlinear behaviour. Using the largest available distance compilation from CosmicFlows3, we find that the data is consistent with simulations based on the concordance model, for sources at $20150\,$Mpc.
Original language  English 

Article number  001 
Pages (fromto)  114 
Number of pages  14 
Journal  Journal of Cosmology and Astroparticle Physics 
Volume  2019 
Issue number  03 
DOIs  
Publication status  Published  1 Mar 2019 
Keywords
 astroph.CO
 grqc
 RCUK
 STFC
 ST/N000668/1
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Is the local Hubble flow consistent with concordance cosmology?
Bengaly, C. A. P. (Creator), Larena, J. (Creator) & Maartens, R. (Creator), IOP Publishing, 1 Mar 2019
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