THE COSMIC MICROWAVE BACKGROUND: PRESENT STATUS AND COSMOLOGICAL PERSPECTIVES CMB Polarization as complementary information to anisotropies
نویسنده
چکیده
The origin of CMB polarization is reviewed. Special emphasis is placed on the cosmological information encoded in it: the nature of primordial fluctuations, the connection with the inflation paradigm. Insights into more recent epochs are also discussed: early reionization and high redshift matter distribution from CMB lensing. Résumé. L’origine de la polarisation du CMB est passée en revue. On insiste plus particulièrement sur l’information qu’elle contient: la nature des fluctuations primordiales, le lien avec le paradigme de l’inflation. On discute aussi les aperçus apportés sur des époques plus récentes : la réionisation précoce et la distribution de matière pour des hauts décalages vers le rouge. c © 2003 Académie des sciences keyword 1 / keyword 2 / etc.
منابع مشابه
Cmb Anisotropies, Cosmological Parameters and Fundamental Physics: Current Status & Perspectives
I describe briefly the Cosmic Microwave Background (hereafter CMB) physics which explains why high accuracy observations of its spatial structure are a unique observational tool both for the determination of the global cosmological parameters and to constrain observationally the physics of the early universe. I also briefly survey the many experiments which have measured the anisotropies of the...
متن کاملTHE COSMIC MICROWAVE BACKGROUND : PRESENT STATUS AND COSMOLOGICAL PERSPECTIVES Cosmological Parameter Estimation : Method
CMB anisotropy data could put powerful constraints on theories of the evolution of our Universe. Using the observations of the large number of CMB experiments, many studies have put constraints on cosmological parameters assuming different frameworks. Assuming for example inflationary paradigm, one can compute the confidence intervals on the different components of the energy densities, or the ...
متن کاملCosmological constraints from Microwave Background Anisotropy and Polarization
The recent high-quality measurements of the Cosmic Microwave Background anisotropies and polarization provided by ground-based, balloon-borne and satellite experiments have presented cosmologists with the possibility of studying the large scale properties of our universe with unprecedented precision. Here I review the current status of observations and constraints on theoretical models.
متن کاملar X iv : a st ro - p h / 97 05 13 5 v 1 1 9 M ay 1 99 7 THE CMB ANISOTROPY EXPERIMENTS
Anisotropies in the cosmic microwave background (CMB) encode information about the evolution and development of the Universe. It is understood that quality observations of the CMB anisotropies can provide a very strong test of cosmological models and provide high precision measurements of major cosmological parameters. This paper provides a review of the COBE DMR results, the current status of ...
متن کاملAnisotropies in the CMB
Over the last few years it has become common place to speak of the Cosmic Microwave Background (CMB) anisotropy as the premier laboratory for cosmology and early universe physics. In the titles to most talks the word \anisotropy" is often absent, it being understood that the talk will be about the anisotropy. This is an interesting phenomenon. Consider that when we speak of the CMB we could spe...
متن کامل