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An analytical model for the nonlinear redshiftspace power spectrum
, 2002
"... The power spectrum of the galaxy spatial distribution is an important statistic for describing inhomogeneities in the Universe. The spatial distribution of galaxies observed with a redshift survey is distorted by the peculiar motions of ..."
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The power spectrum of the galaxy spatial distribution is an important statistic for describing inhomogeneities in the Universe. The spatial distribution of galaxies observed with a redshift survey is distorted by the peculiar motions of
The redshift–space power spectrum of Abell–ACO clusters of galaxies
, 1997
"... One of the major aims of current cosmological studies is to improve our knowledge about the structure of the Universe on very large scales (> ∼ 100 h −1 Mpc; h is the Hubble constant ..."
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One of the major aims of current cosmological studies is to improve our knowledge about the structure of the Universe on very large scales (> ∼ 100 h −1 Mpc; h is the Hubble constant
astroph/0005085 The redshift space power spectrum in the halo model
, 2000
"... The power spectrum of the mass fluctuations in the universe is one of the most fundamental quantities in largescale structure. It is robust, but sensitive to several cosmological parameters such as the Hubble constant, the matter density ..."
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The power spectrum of the mass fluctuations in the universe is one of the most fundamental quantities in largescale structure. It is robust, but sensitive to several cosmological parameters such as the Hubble constant, the matter density
SHAO/MPA00? An analytical model for the nonlinear redshiftspace power spectrum
, 2002
"... We use Nbody simulations to test the predictions of the redshift distortion in the power spectrum given by the halo model in which the clustering of dark matter particles is considered as a result of the clustering of dark halos in space and the distribution of dark matter particles in individual d ..."
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We use Nbody simulations to test the predictions of the redshift distortion in the power spectrum given by the halo model in which the clustering of dark matter particles is considered as a result of the clustering of dark halos in space and the distribution of dark matter particles in individual
RedshiftSpace Distortions, Pairwise Velocities and Nonlinearities
, 2004
"... We derive the exact relationship, including all nonlinearities, between realspace and redshiftspace twopoint statistics through the pairwise velocity distribution function. We show using numerical simulations that the pairwise velocity PDF is strongly nonGaussian at all scales, and explain why t ..."
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Cited by 12 (0 self)
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this is so. We caution that a commonly used ansatz to model the redshiftspace power spectrum gives rise to an unphysical distribution of pairwise velocities, and show that it is in general impossible to derive the distribution from measurements of redshiftspace clustering. Methods that claim to do
Nonlinear Cosmological Power Spectra in Real and RedshiftSpace
"... We present an expression for the nonlinear evolution of the cosmological power spectrum based on following Lagrangian trajectories. This is simplified using the Zel'dovich approximation to trace particle displacements, assuming Gaussian initial conditions. The model is found to exhibit the tran ..."
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Cited by 1 (0 self)
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the transfer of power from large to small scales expected in selfgravitating fields. Some exact solutions are found for powerlaw initial spectra. We have extended this analysis into redshiftspace and found a solution for the nonlinear, anisotropic redshiftspace power spectrum in the limit of plane
Redshift space correlations and scaledependent stochastic biasing of density peaks
, 909
"... We calculate the redshift space correlation function and the power spectrum of density peaks of a Gaussian random field. Our derivation, which is valid on linear scales k � 0.1 hMpc −1, is based on the peak biasing relation given in Desjacques [Phys. Rev. D., 78, 3503 (2008)]. In linear theory, the ..."
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Cited by 3 (0 self)
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We calculate the redshift space correlation function and the power spectrum of density peaks of a Gaussian random field. Our derivation, which is valid on linear scales k � 0.1 hMpc −1, is based on the peak biasing relation given in Desjacques [Phys. Rev. D., 78, 3503 (2008)]. In linear theory
CITA9816, FERMILABPub98/254A The Bispectrum as a Signature of Gravitational Instability in RedshiftSpace
, 1998
"... The bispectrum provides a characteristic signature of gravitational instability that can be used to probe the Gaussianity of the initial conditions and the bias of the galaxy distribution. We study how this signature is affected by redshift distortions using perturbation theory and highresolution nu ..."
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numerical simulations. We obtain perturbative results for the multipole expansion of the redshiftspace bispectrum which provide a natural way to break the degeneracy between bias and Ω present in measurements of the redshiftspace power spectrum. We propose a phenomenological model that incorporates
Cosmological RedshiftSpace Distortion II:
, 1996
"... distance in an inhomogeneous universe and evolution of bias ..."
Results 1  10
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715,676