Galaxy flows within 8,000 km/s from Numerical Action methods

Abstract

The trajectories since z=4 of systems of galaxies (`halos') with cz < 8,000 km/s are found through Numerical Action reconstructions. A set of 9,719 halos from a 2MASS group catalog and Cosmicflows-3 catalogs are given attention. Present distances are adjusted to minimize departures from observed redshifts. For those with the most precisely determined distances, compromises are made between distance and redshift agreement. $H_0$ is varied from 69 to 77 km s${}^{-1}$ Mpc${}^{-1}$ with ${\Omega }_m$ set by the baryon acoustic oscillation constraint from the Planck Satellite. A best fitting amplitude of the mass-to-light relation is found. A uniform density associated with the interhalo medium accounts for the matter not in halos. The solution paths provide the histories of the formation of the nearby large structures and depict how the voids emptied. Assuming no local over/underdensity, the best model has $H_0=73$ km s${}^{-1}$ Mpc${}^{-1}$ with nearly the same density arising from interhalo matter (IHM) as from halos. We examine local over/underdensities by varying the IHM density and find a valley of best fit models along $H_0=73.0(1+0.165\delta )$ km s${}^{-1}$ Mpc${}^{-1}$. Friedmann models with distinct densities internal and external to the study region give a similar relationship. The fraction of matter in the IHM seen in n-body simulations roughly matches that in our $H_0=72$ scenario. Videos have been created to visualize the complexities of formation of large-scale structures. Standard n-body calculations starting from the first time-steps as tests of the NAM solutions, and continue until cosmic scale factor $a=2$ provide glimpses into the future.

arXiv comment29 pages, 28 figures, 4 links to sketchfab.com, and 4 links to vimeo.com videos

References in corpus (65)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Large scale bias and the peak background split
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• Toward a halo mass function for precision cosmology: the limits of universality
• Mass function of dark matter halos
• The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures
• 2MASS Extended Source Catalog: Overview and Algorithms
• The large-scale structure of the Universe
• Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with LambdaCDM
• The 2MASS Redshift Survey - Description and Data Release
• The ACS Virgo Cluster Survey. XIII. SBF Distance Catalog and the Three-Dimensional Structure of the Virgo Cluster
• Precision Determination of the Mass Function of Dark Matter Halos
• Cosmicflows-3
• COLOSSUS: A python toolkit for cosmology, large-scale structure, and dark matter halos
• Tip of the Red Giant Branch Distances. II. Zero-Point Calibration
• The Laniakea supercluster of galaxies
• The halo mass function through the cosmic ages
• Cosmological parameters from the comparison of peculiar velocities with predictions from the 2M++ density field
• The M31 Velocity Vector. II. Radial Orbit Towards the Milky Way and Implied Local Group Mass
• Galaxy Groups within 3500 km s${}^{-1}$
• The structure of voids
• Evidence for a ~300 Mpc Scale Under-density in the Local Galaxy Distribution
• The 6dF Galaxy Survey: Peculiar Velocity Field and Cosmography
• The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant
• Physical Bayesian modelling of the non-linear matter distribution: new insights into the Nearby Universe
• Galaxy Groups: A 2MASS Catalog
• Constrained Simulations of the Real Universe: the Local Supercluster
• Cosmography of the Local Universe
• Action Principle Solutions For Galaxy Motions Within 3000 Km/s
• Action Dynamics of the Local Supercluster
• Cosmicflows 4: The Calibration of Optical and Infrared Tully-Fisher Relations
• Galaxy Groups
• Mapping Large-Scale Structures Behind the Galactic Plane: The Second CIZA Subsample
• The 6dF Galaxy Survey: The Near-Infrared Fundamental Plane of Early-Type Galaxies
• The Extragalactic Distance Database: The Color-Magnitude Diagrams and Tip of the Red Giant Branch Distances Catalog
• The peculiar velocity field up to $z\sim 0.05$ by forward-modeling Cosmicflows-3 data
• The Dipole Repeller
• Cosmicflows-3: Cosmography of the Local Void
• The Formation of the Local Group Planes of Galaxies
• The Universe behind the Milky Way
• Observational evidence for a local underdensity in the Universe and its effect on the measurement of the Hubble Constant
• The Parkes HI Zone of Avoidance Survey
• Radial and Transverse Velocities of Nearby Galaxies
• On the least action principle in cosmology
• Universal at last? The splashback mass function of dark matter halos
• On structure and kinematics of the Virgo cluster of galaxies
• Constrained realizations of 2MRS density and peculiar velocity fields: growth rate and local flow
• COSMIC BIRTH: Efficient Bayesian Inference of the Evolving Cosmic Web from Galaxy Surveys
• Structures in the Great Attractor Region
• The distance to Hydra and Centaurus from surface brightness fluctuations: Consequences for the Great Attractor model
• The Calibration of the WISE W1 and W2 Tully-Fisher Relation
• Measuring Infrared Surface Brightness Fluctuation Distances with HST WFC3: Calibration and Advice
• The quasi-linear nearby Universe
• The Cosmic V-Web
• Cosmicflows-3: The South Pole Wall
• The Arrowhead Mini-Supercluster of Galaxies
• Local Hole revisited: evidence for bulk motions and self-consistent outflow
• Distance to the Centaurus cluster and its subcomponents from surface brightness fluctuations
• Cosmological Structures behind the Milky Way
• Are the Perseus-Pisces chain and the Pavo-Indus wall connected?
• From Cosmicflows distance moduli to unbiased distances and peculiar velocities
• Infrared luminosities of galaxies in the Local Volume
• Beyond the Halo: Redefining environment with unbound matter in N-body simulations

Cited by in corpus (4)

• The multipole expansion of the local expansion rate
• Comparative Analysis of TRGBs (CATs) from Unsupervised, Multi-Halo-Field Measurements: Contrast is Key
• The Extremely Metal-Poor SN 2023ufx: A Local Analog to High-Redshift Type II Supernovae
• Infall Profiles for Supercluster-Scale Filaments