ar X iv : a st ro - p h / 02 04 01 7 v 1 1 A pr 2 00 2 CMB and Cosmological Parameters : Current Status and Prospects .

ar X iv : a st ro - p h / 02 04 26 2 v 1 1 6 A pr 2 00 2 Cosmology Rounding the Cape

A survey is made of the present observational status on cosmological parameters from microwave background anisotropies. I then move to some non-standard aspect of parameter extraction like quintessence, extra-background of relativistic particles and variations in fundamental constants.

ar X iv : a st ro - p h / 02 04 03 6 v 1 2 A pr 2 00 2 Investigating the Flame Microstructure in Type

ar X iv : a st ro - p h / 04 11 01 3 v 1 3 1 O ct 2 00 4 Robust Signatures of the Relic Neutrinos in CMB ∗

When the perturbations forming the acoustic peaks of the cosmic microwave background (CMB) reentered the horizon and interacted gravitationally with all the matter, neutrinos presumably comprised 41% of the universe energy. CMB experiments have reached a capacity to probe this background of relic neutrinos. I review the neutrino imprints on CMB anisotropy and polarization at the onset of the ac...

ar X iv : a st ro - p h / 02 10 03 4 v 1 1 O ct 2 00 2 MISSING PARAMETERS IN THE CMB PHYSICS

The lecture is devoted to the comparison of a few models of cosmic recombination kinetics with recent CMB anisotropy data and to corresponding predictions for the upcoming Planck mission. The influence of additional sources of ionized photons at the epoch of hydrogen recombination may restrict our possibility to estimate the density of baryonic fraction of matter when using Planck data. This ne...

ar X iv : a st ro - p h / 98 04 15 8 v 1 1 6 A pr 1 99 8 Constraints on Cosmological Parameters from Existing CMB Data

We use current cosmic microwave background data to constrain cosmological parameters. The results are presented as confidence regions in the (Ω–Ho) – plane for both open and flat geometries, and are based on a χ 2 minimization to the power spectrum. Although such an approach does not strictly apply to power spectrum estimates, the results should nonetheless be indicative. We find that purely op...