Proceedings of the 1st Aegean Cosmology Summer School (2001).
astro-ph/0205166

For a PDF version of the article, click here.
For a Postscript version of the article, click here.


THE QUEST FOR THE COSMOLOGICAL PARAMETERS

M. Plionis 1,2


1 Institute of Astronomy & Astrophysics, National Observatory of Athens, 15236, Athens, Greece
2 Instituto Nacional de Astrofisica, Optica y Electronica, Apdo. Postal 51 y 216, Puebla, Pue., C.P.72000, Mexico


Abstract. The following review is based on lectures given in the 1st Samos Cosmology summer school. It presents an attempt to discuss various issues of current interest in Observational Cosmology, the selection of which as well as the emphasis given, reflects my own preference and biases. After presenting some Cosmological basics, for which I was aided by excellent text-books, I emphasize on attempts to determine some of the important cosmological parameters; the Hubble constant, the curvature and total mass content of the Universe. The outcome of these very recent studies is that the concordance model, that fits the majority of observations, is that with Omegam + OmegaLambda = 1, OmegaLambda appeq 0.7, H0 appeq 70 km s-1 Mpc-1, OmegaB appeq 0.04 and spectral index of primordial fluctuations, the inflationary value n appeq 1. I apologise before hand for the many important works that I have omitted and for the possible misunderstanding of those presented.


Table of Contents

BACKGROUND - PREREQUISITES
Basic Elements of Dynamical Cosmology
Thermal Beginning of the Universe
Cosmological Parameters
Distribution of Matter in the Universe

DISTANCE SCALE, HUBBLE CONSTANT & THE AGE OF THE UNIVERSE
Distances of Extragalactic Objects
Biases affecting Distance Determinations
Distance Indicators:
The Value of Ho and the Age of the Universe

DETERMINATION OF THE MATTER/ENERGY DENSITY OF THE UNIVERSE
The CMB fluctuation spectrum
The Hubble diagram with SNIa
Clustering of Galaxies, Clusters & QSO's
M/L observations
Cluster Baryon Fraction:
Large-Scale Velocity Field:
Rate of Cluster Formation Evolution:

SUMMARY

REFERENCES

Next