An Isocurvature CDM Cosmogony. II. Observational Tests

Abstract

A companion paper presents a worked model for evolution through inflation to initial conditions for an isocurvature model for structure formation. It is shown here that the model is consistent with the available observational constraints that can be applied without the help of numerical simulations. The model gives an acceptable fit to the second moments of the angular fluctuations in the thermal background radiation and the second through fourth moments of the measured large-scale fluctuations in galaxy counts, within the possibly significant uncertainties in these measurements. The cluster mass function requires a rather low but observationally acceptable mass density, $0.1\lsimΩ\lsim 0.2$ in a cosmologically flat universe. Galaxies would be assembled earlier in this model than in the adiabatic version, an arguably good thing. Aspects of the predicted non-Gaussian character of the anisotropy of the thermal background radiation in this model are discussed.

14 pages, 3 postscript figures, uses aas2pp4.sty

References in corpus (9)

• Extracting Primordial Density Fluctuations
• Evidence for non-Gaussianity in the COBE DMR Four Year Sky Maps
• Maximum-Likelihood Comparisons of Tully-Fisher and Redshift Data. II. Results from an Expanded Sample
• The seeds of rich galaxy clusters in the Universe
• An Isocurvature CDM Cosmogony. I. A Worked Example of Evolution Through Inflation
• On the Evolution of Damped Lyman Alpha Systems to Galactic Disks
• Comparison of the Large Scale Clustering in the APM and the EDSGC Galaxy Surveys
• Cosmological Perturbation Theory and the Spherical Collapse model - III. The Velocity divergence field and the $\Omega$ dependence
• Gaussian Peaks and Clusters of Galaxies

Cited by in corpus (77)

• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• Non-Gaussianity from Inflation: Theory and Observations
• Adiabatic and entropy perturbations from inflation
• Constraining dark energy with SNe Ia and large-scale structure
• Large-scale structure, the cosmic microwave background, and primordial non-gaussianity
• The abundance of high-redshift objects as a probe of non-Gaussian initial conditions
• Non-Gaussianity from Inflation
• The General Primordial Cosmic Perturbation
• The Cosmic Microwave Background Bispectrum and Inflation
• The Bispectrum of IRAS Galaxies
• Adiabatic and Isocurvature Perturbations from Inflation: Power Spectra and Consistency Relations
• Halo Clustering with Non-Local Non-Gaussianity
• Tests for primordial non-Gaussianity
• Constraining Isocurvature Perturbations with CMB Polarization
• CMB spectral distortions from small-scale isocurvature fluctuations
• Bounds on isocurvature perturbations from CMB and LSS data
• Tests for Gaussianity of the MAXIMA-1 CMB Map
• Axion inflation with gauge field production and primordial black holes
• Limits on isocurvature fluctuations from Boomerang and MAXIMA
• An Isocurvature CDM Cosmogony. I. A Worked Example of Evolution Through Inflation
• A Semi-Analytic Model for Cosmological Reheating and Reionization Due to the Gravitational Collapse of Structure
• Constraining Primordial Non-Gaussianity With the Abundance of High Redshift Clusters
• Constraints on a non-gaussian (${\chi }_m^2$) CDM model
• Evolution of the cluster abundance in non-Gaussian models
• The Projected Three-point Correlation Function: Theory and Observations
• Constraints on isocurvature models from the WMAP first-year data
• Non-Linear gravitational growth of large scale structures inside and outside standard Cosmology
• The initial conditions of the universe: how much isocurvature is allowed?
• Bounds on CDM and neutrino isocurvature perturbations from CMB and LSS data
• Squeezing the window on isocurvature modes with the Lyman-alpha forest
• Primordial non-Gaussianity in the large scale structure of the Universe
• Compensated Isocurvature Perturbations and the Cosmic Microwave Background
• Ionized Gas in Damped Lyman Alpha Protogalaxies: II. Comparison Between Models and the Kinematic Data
• On the trispectrum as a gaussian test for cosmology
• Probing the scale dependence of non-Gaussianity with spectral distortions of the cosmic microwave background
• Limits on Isocurvature Perturbations from Non-Gaussianity in WMAP Temperature Anisotropies
• Oscillations During Inflation and the Cosmological Density Perturbations
• The 3-point function in the large scale structure: I. The weakly non-linear regime in N-body simulations
• Characterising the Primordial Cosmic Perturbations
• Open and closed CDM isocurvature models contrasted with the CMB data
• Cluster abundances and S-Z power spectra: effects of non-Gaussianity and early dark energy
• The Expected Mass Function for Low Mass Galaxies in a CDM Cosmology: Is There a Problem?
• Gravitational Clustering from Chi^2 Initial Conditions
• Skewness as a probe of non-Gaussian initial conditions
• Statistical Cosmology with Quadratic Density Fields
• Adiabatic and entropy perturbations propagation in a bouncing Universe
• Cosmic Microwave Background anisotropies and extra dimensions in String Cosmology
• Constraints on Primordial Nongaussiantiy from the High-Redshift Cluster MS1054--03
• The CMB Bispectrum, Trispectrum, non-Gaussianity, and the Cramer-Rao Bound
• Long range correlation in cosmic microwave background radiation
• Perturbation amplitude in isocurvature inflation scenarios
• Predictions for the clustering properties of the Lyman-alpha Forest - I. One-point statistics
• Higher order moments of the density field in a parameterized sequence of non-gaussian theories
• Generalized CMB initial conditions with pre-equality magnetic fields
• Cosmological signatures of tilted isocurvature perturbations: reionization and 21cm fluctuations
• Non-Gaussianity from Self-Ordering Scalar Fields
• Characteristic Angular Scales in Cosmic Microwave Background Radiation
• Is Cosmology Solved?
• On the bispectrum of COBE and WMAP
• The Cosmological Constant and Quintessence from a Correlation Function Comoving Fine Feature in the 2dF Quasar Redshift Survey
• The Probability Distribution for Non-Gaussianity Estimators
• The Cosmic Microwave Background: State of the Art
• A Model for Structure Formation Seeded by Gravitationally Produced Matter
• The probability distribution for non-Gaussianity estimators constructed from the CMB trispectrum
• Searching for non-Gaussianity in the VSA data
• Goodness-of-Fit Tests to study the Gaussianity of the MAXIMA data
• Wigner-Eckart theorem in cosmology: Bispectra for total-angular-momentum waves
• Cosmological constraints on the curvaton web parameters
• Dynamics of gravitational clustering III. The quasi-linear regime for some non-Gaussian initial conditions
• Galaxy-QSO Correlation induced by Weak Gravitational Lensing arising from Large-Scale Structure
• Adiabatic versus Isocurvature Non--Gaussianity
• Numerical Simulation of Non-Gaussian Random Fields with Prescribed Marginal Distributions and Cross-Correlation Structure II: Multivariate Random Fields
• Particle Creation in Pre-Big-Bang Cosmology: theory and observational consequences
• Lifting cosmic degeneracy within a single quasar survey
• Evolution of Power Spectrum in Non-Gaussian Models
• How to distinguish a nearly flat Universe from a flat Universe using the orientation independence of a comoving standard ruler
• S-Z Power Spectra