What is it about?
The current standard model of cosmology predicts that the Universe should look homogeneous over distances larger than about 100 megaparsecs. But we see structure on scales more than twenty times larger than this. Instead, we show in this paper that the alternative cosmology known as the R_h=ct universe predicts a transition to homogeneity at about 2.2 gigaparsecs, just beyond the largest structures seen so far.
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Why is it important?
The observation of structure on scales much bigger than that predicted by the standard model indicates that something is wrong with our current picture of how galaxies and clusters formed. Almost certainly, new physics is called for. This paper demonstrates that the formation of structure in the R_h=ct cosmology is instead fully consistent with the data, adding to the observational evidence favoring this alternative model.
Perspectives
The recent discovery of well-formed, high redshift galaxies by the JWST satellite conflicts with the predictions of the standard model. A complementary problem is the observation of structure on much bigger scales than is currently predicted. Together, these problems highlight the inadequacy of the standard model in accounting for the evolution of the early Universe. They instead support the structure formation predicted by the alternative cosmology known as the R_h=ct universe, adding considerable support to the idea that the latter ought to be a serious candidate for becoming the new standard in theoretical cosmology.
Professor Fulvio Melia
University of Arizona
Read the Original
This page is a summary of: The scale of homogeneity in the Rh = ct Universe, Monthly Notices of the Royal Astronomical Society, August 2023, Oxford University Press (OUP),
DOI: 10.1093/mnras/stad2496.
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