Abstract
view Abstract Citations (11) References (39) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Amplitude of Primeval Fluctuations from Cosmological Mass Density Reconstructions Seljak, Uros ; Bertschinger, Edmund Abstract We use the POTENT reconstruction of the mass density field in the nearby universe to estimate the amplitude of the density fluctuation power spectrum for various cosmological models. We find sigma_8\Omega_m^{0.6}= 1.3^{+0.4}_{-0.3}, almost independently of the power spectrum. This value agrees well with the COBE normalization for the standard CDM model, while some alternative models predict an excessive amplitude compared with COBE. Flat low \Omega_m models and tilted models with spectral index n<0.8 are particularly discordant. Publication: The Astrophysical Journal Pub Date: June 1994 DOI: 10.1086/174163 arXiv: arXiv:astro-ph/9311072 Bibcode: 1994ApJ...427..523S Keywords: Astronomical Models; Background Radiation; Cosmology; Density Distribution; Flux Density; Mass Distribution; Matter (Physics); Microwaves; Power Spectra; Radiation Spectra; Space Density; Cosmic Background Explorer Satellite; Dark Matter; Galactic Rotation; Hubble Constant; Perturbation Theory; Radial Velocity; Universe; Velocity Distribution; Astrophysics; COSMOLOGY: COSMIC MICROWAVE BACKGROUND; COSMOLOGY: LARGE-SCALE STRUCTURE OF UNIVERSE; Astrophysics E-Print: 10 pages, AAS Latex v3.0, 1 figure and postscript available by anonymous ftp to arcturus.mit.edu, ApJ, in press 1994, preprint MIT-CSR-93-33 full text sources arXiv | ADS |
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