# Distribution function approach to redshift space distortions. Part III: halos and galaxies

@article{Okumura2012DistributionFA, title={Distribution function approach to redshift space distortions. Part III: halos and galaxies}, author={Teppei Okumura and Uros Seljak and Vincent Desjacques}, journal={Journal of Cosmology and Astroparticle Physics}, year={2012}, volume={2012}, pages={014-014} }

It was recently shown that the power spectrum in redshift space can be written as a sum of cross-power spectra between number weighted velocity moments, of which the lowest are density and momentum density. We investigate numerically the properties of these power spectra for simulated galaxies and dark matter halos and compare them to the dark matter power spectra, generalizing the concept of the bias in density-density power spectra. Because all of the quantities are number weighted this…

## 56 Citations

### Understanding redshift space distortions in density-weighted peculiar velocity

- Physics
- 2015

Observations of the kinetic Sunyaev-Zel'dovich (kSZ) effect measure the density-weighted velocity field, a potentially powerful cosmological probe. This paper presents an analytical method to predict…

### Peculiar velocities in redshift space: formalism, N-body simulations and perturbation theory

- Physics
- 2014

Direct measurements of peculiar velocities of galaxies and clusters of galaxies can in principle provide explicit information on the three dimensional mass distribution, but this information is…

### Distribution function approach to redshift space distortions. Part V: perturbation theory applied to dark matter halos

- Physics
- 2012

Numerical simulations show that redshift space distortions (RSD) introduce strong scale dependence in the power spectra of halos, with ten percent deviations relative to linear theory predictions…

### Distribution function approach to redshift space distortions. Part IV: perturbation theory applied to dark matter

- Physics
- 2012

We develop a perturbative approach to redshift space distortions (RSD) using the phase space distribution function approach and apply it to the dark matter redshift space power spectrum and its…

### Consistent modeling of velocity statistics and redshift-space distortions in one-loop perturbation theory

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2020

The peculiar velocities of biased tracers of the cosmic density field contain important information about the growth of large scale structure and generate anisotropy in the observed clustering of…

### Generating log-normal mock catalog of galaxies in redshift space

- Physics
- 2017

We present a public code to generate a mock galaxy catalog in redshift space assuming a log-normal probability density function (PDF) of galaxy and matter density fields. We draw galaxies by…

### Splashback radius of nonspherical dark matter halos from cosmic density and velocity fields

- PhysicsPhysical Review D
- 2018

We investigate the effects of intrinsic alignments (IA) of dark-matter halo shapes on cosmic density and velocity fields from cluster to cosmic scales beyond 100 Mpc/h. Besides the density…

### Large Scale Structure in Redshift Space

- MathematicsJournal of the Korean Physical Society
- 2018

The mapping of dark matter clustering from real space to redshift space introduces the anisotropic property to the measured density power spectrum in redshift space, known as the redshift space…

### Exploring the redshift-space peculiar velocity field and its power spectrum

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

Redshift-space distortions (RSD) generically affect any spatially-dependent observable that is mapped using redshift information. The effect on the observed clustering of galaxies is the primary…

### Cosmological tests using redshift space clustering in BOSS DR11

- Physics
- 2014

We analyze the clustering of large scale structure in the Universe in a model independent method, accounting for anisotropic effects along and transverse to the line of sight. A large sample of…

## References

SHOWING 1-10 OF 119 REFERENCES

### The non-linear redshift-space power spectrum of galaxies

- Physics
- 1998

We study the power spectrum of galaxies in redshift space, with third-order perturbation theory to include corrections that are absent in linear theory. We assume a local bias for the galaxies: i.e.,…

### Redshift-space distortions with the halo occupation distribution - I. Numerical simulations

- Physics
- 2006

We show how redshift-space distortions of the galaxy correlation function or power spectrum can constrain the matter density parameter Ω m and the linear matter fluctuation amplitude σ 8 . We improve…

### Distribution function approach to redshift space distortions. Part IV: perturbation theory applied to dark matter

- Physics
- 2012

We develop a perturbative approach to redshift space distortions (RSD) using the phase space distribution function approach and apply it to the dark matter redshift space power spectrum and its…

### Distribution function approach to redshift space distortions

- Physics
- 2011

We develop a phase space distribution function approach to redshift space distortions (RSD), in which the redshift space density can be written as a sum over velocity moments of the distribution…

### SYSTEMATIC EFFECTS ON DETERMINATION OF THE GROWTH FACTOR FROM REDSHIFT-SPACE DISTORTIONS

- Physics
- 2010

The linear growth factor of density perturbations is generally believed to be a powerful observable quantity of future large redshift surveys to probe physical properties of dark energy and to…

### Analytic model for galaxy and dark matter clustering

- Physics
- 2000

We investigate an analytic model to compute the non-linear power spectrum of dark matter, galaxies and their cross-correlation. The model is based on Press–Schechter haloes, which cluster and have…

### Distribution function approach to redshift space distortions. Part II: N-body simulations

- Physics
- 2012

Measurement of redshift-space distortions (RSD) offers an attractive method to directly probe the cosmic growth history of density perturbations. A distribution function approach where RSD can be…

### Redshift-space distortions, pairwise velocities and nonlinearities

- Physics
- 2004

We derive the exact relationship, including all nonlinearities, between real-space and redshift-space two-point statistics through the pairwise velocity distribution function. We show using numerical…

### Towards an accurate model of the redshift-space clustering of haloes in the quasi-linear regime

- Physics
- 2011

Observations of redshift-space distortions in spectroscopic galaxy surveys offer an attractive method for measuring the build-up of cosmological structure, which depends both on the expansion rate of…

### Power Spectrum of Cosmic Momentum Field Measured from the SFI Galaxy Sample

- Physics
- 2006

We have measured the cosmic momentum power spectrum from the peculiar velocities of galaxies in the SFI sample. The SFI catalog contains field spiral galaxies with radial peculiar velocities derived…