REVIEW 28 cited by
A population of red candidate massive galaxies ~600 Myr after the Big Bang
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
Galaxies with stellar masses as high as $\sim 10^{11}$ solar masses have been identified out to redshifts $z \sim 6$, approximately one billion years after the Big Bang. It has been difficult to find massive galaxies at even earlier times, as the Balmer break region, which is needed for accurate mass estimates, is redshifted to wavelengths beyond $2.5\mum$. Here we make use of the $1-5\mum$ coverage of the JWST early release observations to search for intrinsically red galaxies in the first ~750 million years of cosmic history. In the survey area, we find six candidate massive galaxies (stellar mass $>10^{10}$ solar masses) at $7.4 < z < 9.1$, 500 - 700 Myr after the Big Bang, including one galaxy with a possible stellar mass of $\sim 10^{11}$ solar masses. If verified with spectroscopy, the stellar mass density in massive galaxies would be much higher than anticipated from previous studies based on rest-frame ultraviolet-selected samples.
Forward citations
Cited by 28 Pith papers
-
Ab Initio Cosmological Simulations: From Inflation to Present-Day Structure Formation
Nonlinear axion-U(1) inflation, simulated on a lattice and fed into N-body simulations, boosts small-scale structure and high-redshift halo counts by up to ~200% relative to standard single-field initial conditions.
-
Not-quite-primordial black holes
Modest small-scale density fluctuations can make halos at z>200 where CMB radiation suppresses molecular cooling, letting gas collapse directly into black hole seeds that match JWST counts.
-
Environmental Evidence for Overly Massive Black Holes in Low Mass Galaxies and a Black Hole - Halo Mass Relation at $z \sim 5$
Faint broad-line AGN at redshift 4 to 5 appear to live in low-mass galaxies of about 50 million solar masses, implying black holes that are an order of magnitude heavier than their host stellar mass.
-
CORN -- Chronometers of Relic Nature I: The first estimate of the expansion rate of the Universe using compact relic galaxies
The first Hubble-parameter measurement using relic galaxies gives H(z=0.15)=85±53 km/s/Mpc and identifies alpha-element enhancement as a major systematic in the Dn4000 chronometer method.
-
First Light and Assembly of GalaxieS (FLAGS) I: The JWST/NIRCam Number Counts and IGL as Constraints on Galaxy Formation Models
FLAGS-I delivers the deepest JWST/NIRCam number counts to date, new 2.77 and 4.10 micron IGL constraints, and a model comparison that ranks SC-SAM first.
-
Where did all the Little Red Dots go? The abundance of LRD analogues among objects with broad lines at $z < 0.35$
Only 0.08% of low-redshift broad-line objects have SEDs resembling high-redshift Little Red Dots, yielding nine candidates, one of which is the known analogue 'The Egg'.
-
SCRIPT in the Cosmic Dawn: Distinguishing Redshift-Evolving Galaxy Populations with 21-cm Fluctuations
The 21-cm power spectrum, not the sky-averaged signal alone, can distinguish a redshift-evolving galaxy population from a static one during the cosmic dawn.
-
Revisiting Metastable Dark Energy in Light of DESI DR2 BAO and DESI DR1 Full-Shape Measurements
Metastable dark energy, where the vacuum energy decays at a constant rate, fits the data but is not required: some combinations show 2-3 sigma hints of decay, none decisively beats the cosmological constant.
-
Reduced Incidence of Little Red Dots at z < 3 from Number Density and Halo Mass Evolution
LRDs transition from underdense low-halo-mass environments at z>4 to typical galaxy conditions by z~3.5, with halo growth leading to larger sizes and SED changes that explain their disappearance at lower redshifts.
-
Towards a unified quantum field theory of dark energy and inflation: unstable de Sitter vacuum and running vacuum
The vacuum energy of quantum fields, computed exactly in de Sitter spacetime and then allowed to decay into radiation, can drive H^4-powered inflation and leave a slowly running dark energy δρ_vac ~ m_Pl^2 H^2, unifyi...
-
Dark Bondi Accretion Aided by Baryons and the Origin of JWST Little Red Dots
Gravothermal collapse in self-interacting dark matter halos, aided by brief baryonic Eddington accretion, can grow solar-mass seeds to 10^7 solar-mass black holes within about 500 million years, explaining JWST little...
-
An upper limit of 10$^6$ M$_\odot$ in dust from ALMA observations in 60 Little Red Dots
Stacking 60 little red dots in ALMA 1.3 mm data yields a 3 sigma dust mass limit near 10^6 solar masses, ten times deeper than previous limits.
-
Early Galaxies from Rare Inflationary Processes and JWST Observations
Rare Poisson processes during inflation can seed dense regions that collapse into massive galaxies at redshifts where standard cosmology predicts almost none, and JWST could detect them.
-
Multi-fidelity emulator for large-scale 21 cm lightcone images: a few-shot transfer learning approach with generative adversarial network
Few-shot transfer learning lets a GAN trained on small 21 cm simulations emulate large-scale lightcone images with only 80 large-box simulations, at percent-level small-scale accuracy and tens-of-percent large-scale accuracy.
-
Large-Scale Structure Probes of the Post-Inflationary Axiverse
HST ultraviolet luminosity function data at z=4-10, combined with Lyman-α and CMB data, place leading constraints on subdominant post-inflationary axion dark matter via its white-noise isocurvature perturbations.
-
Influence of supermassive primordial black holes on ultraviolet luminosity of high-redshift galaxies
Fitting a model of supermassive primordial black holes to JWST data at z=11 reproduces the excess of bright galaxies, but the agreement reflects parameter tuning rather than an independent test.
-
Not-quite-primordial black holes seeded by cosmic string loops
Cosmic string loops moving through the early universe can seed halos that collapse into 10^5 solar mass black holes, potentially explaining JWST's little red dots.
-
Spectroscopic Supermassive Dark Star candidates
Four JWST high-redshift sources, including JADES-GS-z14-0, are spectroscopically consistent with supermassive dark star models, with a tentative He II 1640 absorption feature in the most distant object.
-
Little ado about everything II: an `emergent' dark energy from structure formation to rule cosmic tensions
An ensemble-averaged stochastic cosmology with a 'little ado' noise term produces an emergent dark energy that fits late-time data and claims to relieve the H0 and f sigma8 tensions.
-
Illustrating the consequences of a misuse of $\sigma_8$ in cosmology
Cosmologists should compare clustering amplitude with the h-independent statistic sigma_12 instead of sigma_8, because sigma_8's smoothing scale shifts with H0 and artificially worsens the growth tension in high-H0 models.
-
Composite Dark Energy and the Cosmological Tensions
A composite dark energy with negative-energy phantom matter before z≈1.5 and quintessence afterward improves the fit over ΛCDM by ΔAIC≈60 and resolves both tensions with BAO 2D, but not with BAO 3D.
-
Exploring cosmological imprints of phantom crossing with dynamical dark energy in Horndeski gravity
A Horndeski scalar-field dark energy model that crosses the phantom divide and has negative early-time energy density fits cosmological data as well as LambdaCDM but does not resolve the main tensions.
-
Black Holes and Baryon Number Violation: Unveiling the Origins of Early Galaxies and the Low-Mass Gap
The authors argue that near a black hole horizon the gravitational field flattens the Higgs potential, removing the sphaleron barrier, and that the resulting baryon generation can explain early massive galaxies and th...
-
Little Red reionization factories
LRDs may drive cosmic reionization: tidal fields are said to funnel intergalactic hydrogen into colliding streams at LRD sites, igniting starbursts that ionize the gas.
-
What drives the growth of black holes: a decade of progress
Over the past decade, understanding of supermassive black hole growth has advanced through new facilities, larger datasets, new techniques, and conceptual shifts, with AGN now viewed as transient events in galaxy lifecycles.
-
GRB multi-TeV detection: Beyond standard physics?
The paper restates the claim that photon-ALP oscillations in magnetized media naturally explain the multi-TeV gamma-ray detection of GRB 221009A despite strong EBL absorption.
-
Galaxy Formation in the Early Universe
MOG's stronger gravity shortens gas collapse times, which the author proposes explains JWST's early massive galaxies, but no quantitative test is given.
-
Measuring the expansion history of the Universe with cosmic chronometers
A review of the cosmic chronometer method: differential ages of massive passive galaxies yield cosmology-independent H(z) measurements, now at about 5% accuracy at z~0.5 and potentially percent-level H0 with future surveys.
Discussion (0). Continue with ORCID to comment.