Steps toward the power spectrum of matter. I.The mean spectrum of galaxies

Abstract

We calculate the mean power spectrum of galaxies using published power spectra of galaxies and clusters of galaxies. On small scales we use the power spectrum derived from the 2-dimensional distribution of APM galaxies, on large scales we use power spectra derived from 3-dimensional data for galaxy and cluster samples. Spectra are reduced to real space and to the amplitude of the power spectrum of APM galaxies. Available data indicate the presence of two different populations in the nearby Universe. Clusters of galaxies sample a relatively large region in the Universe where rich, medium and poor superclusters are well represented. Their mean power spectrum has a spike on scale 120 h^{-1}Mpc, followed by an approximate power-law spectrum of index n = -1.9 towards small scales. The power spectrum found from LCRS and IRAS 1.2 Jy surveys is flatter around the maximum, which may represent regions of the Universe with medium-rich and poor superclusters.

arXiv commentLaTex (sty files added), 35 pages, 5 PostScript figures and Table with mean power spectrum embedded, Astrophysical Journal (accepted)

References in corpus (22)

• Where are the Baryons?
• Reconstructing the linear power spectrum of cosmological mass fluctuations
• The Las Campanas Redshift Survey
• The Stromlo-APM Redshift Survey II. Variation of Galaxy Clustering with Morphology and Luminosity
• The Supercluster-Void Network I. The Supercluster Catalogue and Large-Scale Distribution
• A 120-Mpc Periodicity in the Three-Dimensional Distribution of Galaxy Superclusters
• The APM Galaxy Survey III: An Analysis of Systematic Errors in the Angular Correlation Function and Cosmological Implications
• The evolution of galaxy clustering
• The APM Galaxy Survey:- V. Catalogues of Galaxy Clusters
• The Las Campanas Redshift Survey Galaxy-Galaxy Autocorrelation Function
• The 2D Power Spectrum of the Las Campanas Redshift Survey: Detection of Excess Power on 100 h^{-1} Mpc Scales
• Can Baryonic Features Produce the Observed 100 Mpc Clustering?
• The supercluster--void network II. An oscillating cluster correlation function
• Power Spectrum Analysis of the Stromlo-APM Redshift Survey
• The Power Spectrum of Galaxies in the Nearby Universe
• Constraining cosmological models with cluster power spectra
• The Power Spectrum of Rich Clusters of Galaxies on Large Spatial Scales
• Steps toward the power spectrum of matter. II. The biasing correction with sigma_8 normalization
• The supercluster--void network III. The correlation function as a geometrical statistic
• Toward High-Precision Measures of Large-Scale Structure
• The Power Spectrum of Clusters of Galaxies and the Press-Schechter Approximation
• Steps toward the power spectrum of matter. III. The primordial spectrum

Cited by in corpus (16)

• Large Scale Structure
• Steps toward the power spectrum of matter. II. The biasing correction with sigma_8 normalization
• Cosmic strings, loops, and linear growth of matter perturbations
• Features in the primordial power spectrum: constraints from the CMB and the limitation of the 2dF and SDSS redshift surveys to detect them
• Optical and X-ray clusters as tracers of the supercluster-void network. II The spatial correlation function
• Galaxy-QSO Correlation induced by Weak Gravitational Lensing arising from Large-Scale Structure
• The supercluster-void network V. Alternative evidence for its regularity
• The Power Spectrum of Clusters of Galaxies and the Press-Schechter Approximation
• Steps toward the power spectrum of matter. III. The primordial spectrum
• Primordial Feature at the Scale of Superclusters of Galaxies
• CDM models with a steplike initial power spectrum
• Observational Matter Power Spectrum and the Height of the Second Acoustic Peak
• Primordial SdS universe from a 5D vacuum: scalar field fluctuations on Schwarzschild and Hubble horizons
• On the Number Density of Sunyaev-Zel'dovich Clusters of Galaxies
• The bang of a white hole in the early universe from a 6D vacuum state: Origin of astrophysical spectrum
• Inflation from the bang of a white hole induced from a 6D vacuum state