Nonlinear Reconstruction of the Velocity Field
arXiv:1908.08217 · doi:10.3847/1538-4357/ab5580
Abstract
We propose a new velocity reconstruction method based on the displacement estimation by recently developed methods. The velocity is first reconstructed by transfer functions in Lagrangian space and then mapped into Eulerian space. High resolution simulations are used to test the performance. We find that the new reconstruction method outperforms the standard velocity reconstruction in the sense of better cross-correlation coefficient, less velocity misalignment and smaller amplitude difference. We conclude that this new method has the potential to improve the large-scale structure sciences involving a velocity reconstruction, such as kinetic Sunyaev-Zel'dovich measurement and supernova cosmology.
arXiv comment14 pages, 12 figures, matched to the published version
References in corpus (48)
- Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
- Evidence of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect
- Correlated Fluctuations in Luminosity Distance and the (Surprising) Importance of Peculiar Motion in Supernova Surveys
- Reconstruction of the early Universe as a convex optimization problem
- On the Prediction of Velocity Fields from Redshift Space Galaxy Samples
- High Performance P3M N-body code: CUBEP3M
- ELUCID - Exploring the Local Universe with reConstructed Initial Density field I: Hamiltonian Markov Chain Monte Carlo Method with Particle Mesh Dynamics
- Physical Bayesian modelling of the non-linear matter distribution: new insights into the Nearby Universe
- The effect of peculiar velocities on supernova cosmology
- Modeling Biased Tracers at the Field Level
- Wiener Reconstruction of Density, Velocity, and Potential Fields from All-Sky Galaxy Redshift Surveys
- Towards optimal extraction of cosmological information from nonlinear data
- Velocity correction for Hubble constant measurements from standard sirens
- Iterative initial condition reconstruction
- Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope
- Constraining local non-Gaussianities with kSZ tomography
- Cosmological Reconstruction From Galaxy Light: Neural Network Based Light-Matter Connection
- A rigorous EFT-based forward model for large-scale structure
- Reconstruction of the remote dipole and quadrupole fields from the kinetic Sunyaev Zel'dovich and polarized Sunyaev Zel'dovich effects
- Large-Scale Bulk Motions Complicate the Hubble Diagram
- Reconstruction of cosmological density and velocity fields in the Lagrangian Zel'dovich Approximation
- An iterative reconstruction of cosmological initial density fields
- Planck intermediate results. XXXVII. Evidence of unbound gas from the kinetic Sunyaev-Zeldovich effect
- Peculiar Velocity Decomposition, Redshift Space Distortion and Velocity Reconstruction in Redshift Surveys. II. Dark Matter Velocity Statistics
- The kinetic SZ tomography with spectroscopic redshift surveys
- Probing Primordial Chirality with Galaxy Spins
- Peculiar Velocity Reconstruction with Fast Action Method: Tests on Mock Redshift Surveys
- Matched filter optimization of kSZ measurements with a reconstructed cosmological flow field
- Nonlinear reconstruction
- New method for initial density reconstruction
- Observational biases in Lagrangian reconstructions of cosmic velocity fields
- Mapping the real space distributions of galaxies in SDSS DR7: I. Two Point Correlation Functions
- Measurement of the pairwise kinematic Sunyaev-Zeldovich effect with Planck and BOSS data
- Halo nonlinear reconstruction
- Sampling Artifact in Volume Weighted Velocity Measurement.--- I. Theoretical Modelling
- BAO reconstruction: a swift numerical action method for massive spectroscopic surveys
- Finding the Missing Baryons Using CMB as a Backlight
- Sampling Artifact in Volume Weighted Velocity Measurement.--- II. Detection in simulations and comparison with theoretical modelling
- Nonlinear reconstruction of redshift space distortions
- Helmholtz Decomposition of the Lagrangian Displacement
- Reconstructing the baryon acoustic oscillations using biased tracers
- Forecasted constraints on modified gravity from Sunyaev Zel'dovich tomography
- Simulated reconstruction of the remote dipole field using the kinetic Sunyaev Zel'dovich effect
- Application of the iterative reconstruction to simulated galaxy fields
- Understanding the Reconstruction of the Biased Tracer
- Measuring dark matter-neutrino relative velocity on cosmological scales
- Remote Dipole Field Reconstruction with Dusty Galaxies
- Lagrangian reconstruction of cosmic velocity fields
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