A perturbative approach to the redshift space correlation function: beyond the standard model
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2017/08/029
Abstract: We extend our previous redshift space power spectrum code to the redshift space correlation function. Here we focus on the Gaussian Streaming Model (GSM). Again, the code accommodates a wide range of modified gravity and… read more here.
Keywords: correlation function; space correlation; space; redshift space ... See more keywords
Investigating the degeneracy between modified gravity and massive neutrinos with redshift-space distortions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/06/040
Abstract: There is a well known degeneracy between the enhancement of the growth of large-scale structure produced by modified gravity models and the suppression due to the free-streaming of massive neutrinos at late times. This makes… read more here.
Keywords: massive neutrinos; degeneracy; redshift space; modified gravity ... See more keywords
The moment generating function of pairwise velocity in the context of redshift space distortion
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/2/28
Abstract: We study the connections between the pairwise velocity moment generating function G(k ∥, r) and redshift space distortion (RSD) modeling. Here k ∥ is the Fourier wavevector parallel to the line of sight, and r… read more here.
Keywords: redshift space; moment generating; space distortion; generating function ... See more keywords
A Zeldovich reconstruction method for measuring redshift space distortions using cosmic voids
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty2799
Abstract: Redshift space distortions (RSD) in the void-galaxy correlation $\xi^s$ provide information on the linear growth rate of structure in low density environments. Accurate modelling of these RSD effects can also allow the use of voids… read more here.
Keywords: space; redshift space; space distortions; simulation ... See more keywords
Clustering and redshift-space distortions in modified gravity models with massive neutrinos
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1850
Abstract: Modified gravity and massive neutrino cosmologies are two of the most interesting scenarios that have been recently explored to account for possible observational deviations from the concordance Λ cold dark matter (ΛCDM) model. In this… read more here.
Keywords: massive neutrinos; redshift space; modified gravity; space distortions ... See more keywords
Radiative transfer distortions of Lyman α emitters: a new Fingers-of-God damping in the clustering in redshift space
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz2260
Abstract: Complex radiative transfer (RT) of the Lyman α photons poses a theoretical challenge to galaxy surveys that infer the large-scale structure with Lyman α emitters (LAEs). Guided by RT simulations, prior studies investigated the impact… read more here.
Keywords: space; redshift space; effect; lyman emitters ... See more keywords
Anisotropies of galaxy ellipticity correlations in real and redshift space: angular dependence in linear tidal alignment model
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slaa024
Abstract: Investigating intrinsic alignments (IAs) of galaxy shapes is important not only to constrain cosmological parameters unbiasedly from gravitational lensing but also to extract cosmological information complimentary to galaxy clustering analysis. We derive simple and useful… read more here.
Keywords: ellipticity; intrinsic ellipticity; angular dependence; redshift space ... See more keywords
Minimum variance estimation of galaxy power spectrum in redshift space
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slaa132
Abstract: We study an efficient way to enhance the measurability of the galaxy density and/or velocity power spectrum in redshift space. It is based on the angular decomposition with the tripolar spherical harmonic (TripoSH) basis and… read more here.
Keywords: decomposition; redshift space; spectrum redshift; power ... See more keywords
Analytic halo approach to the bispectrum of galaxies in redshift space
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.043528
Abstract: We present an analytic formula for the galaxy bispectrum in redshift space on the basis of the halo approach description with the halo occupation distribution of central galaxies and satellite galaxies. This work is an… read more here.
Keywords: halo approach; bispectrum; space; redshift space ... See more keywords
Precision cosmology with redshift-space bispectrum: A perturbation theory based model at one-loop order
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.043526
Abstract: The large-scale matter distribution in the late-time Universe exhibits gravity-induced non-Gaussianity, and the bispectrum, three-point cumulant is expected to contain significant cosmological information. In particular, the measurement of the bispectrum helps to tighten the constraints… read more here.
Keywords: bispectrum; cosmology; model; redshift space ... See more keywords
Redshift-space distortions from vector perturbations. II. Anisotropic signal
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.103515
Abstract: We study the impact on the galaxy correlation function of the presence of a vector component in the tracers' peculiar velocities, in the case in which statistical isotropy is violated. We present a general framework… read more here.
Keywords: perturbations anisotropic; redshift space; anisotropic signal; vector perturbations ... See more keywords