REVIEW 11 cited by
Cosmicflows-4
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
With Cosmicflows-4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. Eight methodologies are employed, with the largest numbers coming from the correlations between the photometric and kinematic properties of spiral galaxies (TF) and elliptical galaxies (FP). Supernovae that arise from degenerate progenitors (type Ia Sne) are an important overlapping component. Smaller contributions come from distance estimates from the surface brightness fluctuations of elliptical galaxies and the luminosities and expansion rates of core collapse supernovae (SNII). Cepheid period-luminosity relation and tip of the red giant branch observations founded on local stellar parallax measurements along with the geometric maser distance to NGC 4258 provide the absolute scaling of distances. The assembly of galaxies into groups is an important feature of the study in facilitating overlaps between methodologies. Merging between multiple contributions within a methodology and between methodologies is carried out with Bayesian Markov chain Monte Carlo procedures. The final assembly of distances is compatible with a value of the Hubble constant of $H_0=74.6$ km s$^{-1}$ Mpc$^{-1}$ with the small statistical error of $\pm 0.8$ km s$^{-1}$ Mpc$^{-1}$ but a large potential systematic error of ~3 km s$^{-1}$ Mpc$^{-1}$. Peculiar velocities can be inferred from the measured distances. The interpretation of the field of peculiar velocities is complex because of large errors on individual components and invites analyses beyond the scope of this study.
Forward citations
Cited by 11 Pith papers
-
Radial Stellar Age Gradients in 42 Local Volume Dwarf Galaxies
In 42 dwarf galaxies, radial age gradients correlate strongly with global formation history in a way that favors simulations without radially breathing gas flows.
-
A First Observational Assessment of Cosmic Backreaction Over an Extended Redshift Range
First model-light constraints on Ω_R + 3Ω_Q from Pantheon+ and BAO reconstructions are consistent with flat FLRW yet too broad to exclude percent-level backreaction.
-
A low value of $H_0$ in tension with the distance ladder from Megamasers using peculiar velocity reconstruction
Reanalyzing six megamaser galaxies with the M25 peculiar velocity reconstruction yields H0 ≈ 68.7 km/s/Mpc, consistent with the CMB and about 2.2σ below the local distance ladder.
-
Multipolar structure of the local expansion rate from incomplete sky data
CF4 data yield a 3.3σ excess dipole in the local expansion-rate fluctuation field at (l,b)=(290°,-4°)±5°, sourced mainly by z∈[0.03,0.05], with quadrupole/octupole consistent with ΛCDM and no multipole-vector alignments.
-
Expected redshift drift for tilted observers
Redshift drift for tilted observers consists of an FLRW background term plus directional corrections from peculiar expansion, projected shear, and acceleration along the line of sight.
-
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.
-
Redshift Dependence of $H_0$ Dipole in Pantheon+ Supernovae
A dipole in the locally measured Hubble constant appears at 2-3 sigma in the lowest-redshift Pantheon+ supernova bins, points near the Shapley supercluster and CMB dipole, and disappears for higher redshift thresholds.
-
FAST Ultra-Deep Survey: the baryonic Tully-Fisher relation in FUDS0 field
The FUDS0 pilot HI sample yields a baryonic Tully-Fisher slope k=3.32 and shows no significant evolution at z<0.42, though the highest-redshift bin constrains it only indirectly.
-
Hubble tension: a short review of theoretical explanations
A comprehensive review finds no theoretical Hubble-tension solution yet passes all consistency tests; new early-dark-energy chains reach high H0 only when the SH0ES calibration is added.
-
Anomaly detection with spiking neural networks for LHC physics
Claims spiking neural network autoencoders are competitive with conventional autoencoders for LHC anomaly detection across all signal models tested.
-
Cosmology with Peculiar Velocity Surveys
This is a review of the peculiar velocity field in cosmology, summarizing methods, surveys, and forecasts for growth-rate constraints.
Discussion (0). Continue with ORCID to comment.