Cosmological Parameters 2000

Abstract

The cosmological parameters that I emphasize are the age of the universe $t_0$, the Hubble parameter $H_0\equiv 100h$ km s${}^{-1}$ Mpc${}^{-1}$, the average matter density ${\Omega }_m$, the baryonic matter density ${\Omega }_b$, the neutrino density ${\Omega }_{\nu }$, and the cosmological constant ${\Omega }_{\Lambda }$. The evidence currently favors $t_0\approx 13$ Gyr, $h\approx 0.65$, ${\Omega }_m\approx 0.4\pm 0.1$, ${\Omega }_b=0.02h^{-2}$, $0.001<{\Omega }_{\nu }<0.1$, and ${\Omega }_{\Lambda }\approx 0.7$.

16 pages, including one postscript figure; talk presented at 4th International Symposium on Sources and Detection of Dark Matter in the Universe (DM 2000), Marina del Rey, California, 20-23 Feb 2000. Replaced version has updated text and references

References in corpus (3)

• A Preliminary Indication of Evolution of Type Ia Supernovae from their Risetimes
• Cepheid Calibration of the Peak Brightness of SNe Ia -- IX. SN 1989B in NGC 3627
• Cosmological Limits on the Neutrino Mass from the Lya Forest

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• Cosmology with exponential potentials
• Search for Supersymmetric Dark Matter with Superfluid He3 (MACHe3)
• Dark matter in a bouncing universe
• Direct and Indirect Detection of Dark Matter in Heterotic Orbifold Models
• Quintessence dissipative superattractor cosmology
• Cosmic vacuum and large-scale perturbations in the concordant model