Cosmological Model Tests with JWST

Abstract

The James Webb Space Telescope (JWST), which has recently become operational, is capable of detecting objects at record-breaking redshifts, $z\gtrsim 15$. This is a crucial advance for observational cosmology, as at these redshifts the differences between alternative cosmological models manifest themselves in the most obvious way. In recent years, some observational hints have emerged indicating that the Standard Cosmological Model could require correcting. One of these hints is related to the discovery of remote galaxies whose redshifts correspond to the very young Universe (less than one billion years after the Big Bang) but which are similar to nearby galaxies. The issue is that such galaxies in the early Universe do not have enough time to evolve into something similar to the late-Universe galaxies. JWST observations of high-redshift objects are expected to shed light on the origin of this issue. Here we provide results on performing the ``angular diameter -- redshift'' cosmological test for the first JWST observation data. We compare this result with predictions of the standard $\Lambda$CDM cosmological model and some static cosmological models, including Zwicky's ``tired-light'' model. The latter is currently assumed to be ruled out by observations. We challenge this assumption and show that a static model can provide a natural and straightforward way of solving the puzzle of the well-evolved galaxies and better agreements with the results of the JWST ``angular diameter -- redshift'' test at higher redshifts than the correcting evolution model within the $\Lambda$CDM framework. We discuss several cosmological tests that will be important for further research on the possibility of revising the expanding Universe paradigm.

27 pages, 6 figures, 131 references

References in corpus (33)

• The James Webb Space Telescope
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• Two Remarkably Luminous Galaxy Candidates at $z\approx 10-12$ Revealed by JWST
• The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging
• Pōniuā'ena: A Luminous $z=7.5$ Quasar Hosting a 1.5 Billion Solar Mass Black Hole
• Early results from GLASS-JWST. III: Galaxy candidates at z$\sim$9-15
• Discovery and properties of ultra-high redshift galaxies ($9<z<12$) in the JWST ERO SMACS 0723 Field
• Revealing Galaxy Candidates out to $z\sim 16$ with JWST Observations of the Lensing Cluster SMACS0723
• A lack of evolution in the very bright-end of the galaxy luminosity function from z = 8-10
• The mass relations between supermassive black holes and their host galaxies at 1<z<2 with HST-WFC3
• NICMOS Imaging of DRGs in the HDF-S: A Relation Between Star-Formation and Size at z ~ 2.5
• First look with JWST spectroscopy: $z\sim 8$ galaxies resemble local analogues
• HD 140283: A Star in the Solar Neighborhood that Formed Shortly After the Big Bang
• Half-mass radii for ~7,000 galaxies at 1.0 < z < 2.5: most of the evolution in the mass-size relation is due to color gradients
• JWST NIRCam+NIRSpec: Interstellar medium and stellar populations of young galaxies with rising star formation and evolving gas reservoirs
• First Batch of Candidate Galaxies at Redshifts 11 to 20 Revealed by the James Webb Space Telescope Early Release Observations
• The ultraviolet continuum slopes ($\beta$) of galaxies at $\mathbf{z}\simeq 8-16$ from JWST and ground-based near-infrared imaging
• The MillenniumTNG Project: The galaxy population at $z\ge 8$
• Morphologies of Galaxies at $z\gtrsim 9$ Uncovered by JWST/NIRCam Imaging: Cosmic Size Evolution and an Identification of an Extremely Compact Bright Galaxy at $z\sim 12$
• The MUSE Hubble Ultra Deep Field Survey. IX. Evolution of galaxy merger fraction since z~6
• Rest-frame near-infrared sizes of galaxies at cosmic noon: objects in JWST's mirror are smaller than they appeared
• Early results from GLASS-JWST. V: the first rest-frame optical size-luminosity relation of galaxies at $z>7$
• Time Dilation in Type Ia Supernova Spectra at High Redshift
• Tests and problems of the standard model in Cosmology
• Early results from GLASS-JWST XIV: A first morphological atlas of the 1 < z < 5 Universe in the rest-frame optical
• JWST/NIRCam Observations of Stars and HII Regions in $z\simeq 6-8$ Galaxies: Properties of Star Forming Complexes on 150 pc Scales
• High-redshift JWST Observations and Primordial Non-Gaussianity
• The Identification of a Dusty Multiarm Spiral Galaxy at $z=3.06$ with JWST and ALMA
• Alternative ideas in cosmology
• Probing cold gas in a massive, compact star-forming galaxy at z=6
• Does the GRB Duration Depend on Redshift?
• Large-Scale Fluctuations in the Number Density of Galaxies in Independent Surveys of Deep Fields

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• Dark energy in light of the early JWST observations: case for a negative cosmological constant?
• JWST early Universe observations and ΛCDM cosmology
• Primordial power spectrum in light of JWST observations of high redshift galaxies
• A double take on early and interacting dark energy from JWST
• The distribution of galaxy rotation in JWST Advanced Deep Extragalactic Survey
• Quantifying the tension between cosmological models and JWST red candidate massive galaxies
• An empirical consistent redshift bias: A possible direct reproducible observation of Zwicky's TL theory
• Stringent constraint on the CCC+TL cosmology with $H(z)$ Measurements
• A simple direct empirical observation of systematic bias of the redshift as a distance indicator
• Cosmological observational tests in the JWST Era. I: angular size - redshift
• Signatures of Galactic Expansion in Gaia DR3: Implications for the JWST Early-Galaxy Puzzle