Cosmological parameters and power spectrum from peculiar velocities Metadata

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Title

  • Main Title Cosmological parameters and power spectrum from peculiar velocities

Creator

  • Author: Zehavi, Idit
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research (ER) (United States)

Publisher

  • Name: Fermi National Accelerator Laboratory
    Place of Publication: Batavia, Illinois
    Additional Info: Fermi National Accelerator Lab., Batavia, IL (United States)

Date

  • Creation: 1999-09-21

Language

  • English

Description

  • Content Description: The power spectrum of mass density fluctuations is evaluated from the Mark III and the SFI catalogs of peculiar velocities by a maximum likelihood analysis, using parametric models for the power spectrum and for the errors. The applications to the two different data sets, using generalized CDM models with and without COBE normalization, give consistent results. The general result is a relatively high amplitude of the power spectrum, with {sigma}{sub 8}{Omega}{sub m}{sup 0.6} = 0.8 {+-} 0.2 at 90% confidence. Casting the results in the {Omega}{sub m} {minus} {Omega}{sub {Lambda}} plane, yields complementary constraints to those of the high-redshift supernovae, together favoring a nearly flat, unbound and accelerating universe with comparable contributions from {Omega}{sub m} and {Omega}{sub {Lambda}}. Further implications on the cosmological parameters, arising from a joint analysis of the velocities together with small-scale CMB anisotropies and the high-redshift supernovae, are also briefly described.
  • Physical Description: 273 Kilobytes pages

Subject

  • Keyword: Amplitudes
  • Keyword: Supernovae
  • Keyword: Universe
  • Keyword: Energy Spectra
  • Keyword: Cosmology
  • Keyword: Parametric Analysis
  • STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
  • Keyword: Fluctuations

Source

  • Conference: Cosmic Flows Workshop, Victoria, British Columbia (CA), 07/13/1999--07/17/1999

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: FERMILAB-Conf-99/244-A
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 11224
  • Archival Resource Key: ark:/67531/metadc624878
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