The Cosmic Timeline Implied by the JWST High-redshift Galaxies
Fulvio Melia

TL;DR
The paper discusses how recent JWST high-redshift galaxy discoveries challenge the standard LCDM cosmology but align with the R_h=ct universe model, which better explains early galaxy formation timelines.
Contribution
It proposes that the R_h=ct universe model better accounts for early galaxy formation than the standard LCDM model, based on JWST observations.
Findings
JWST high-redshift galaxies challenge LCDM predictions
R_h=ct universe aligns with early galaxy formation timelines
Supports R_h=ct universe as a better cosmological model
Abstract
The so-called `impossibly early galaxy' problem, first identified via the Hubble Space Telescope's observation of galaxies at redshifts z > 10, appears to have been exacerbated by the more recent James Webb Space Telescope (JWST) discovery of galaxy candidates at even higher redshifts (z ~ 17) which, however, are yet to be confirmed spectroscopically. These candidates would have emerged only ~ 230 million years after the big bang in the context of LCDM, requiring a more rapid star formation in the earliest galaxies than appears to be permitted by simulations adopting the concordance model parameters. This time-compression problem would therefore be inconsistent with the age-redshift relation predicted by LCDM. Instead, the sequence of star formation and galaxy assembly would confirm the timeline predicted by the R_h=ct universe, a theoretically advanced version of LCDM that incorporates…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAstronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena · Cosmology and Gravitation Theories
