Mathematics – Logic
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cic..book...49b&link_type=abstract
In: Current issues in cosmology. Edited by Jean-Claude Pecker and Jayant Narlikar. Cambridge, UK: Cambridge University Press, IS
Mathematics
Logic
Cosmic Microwave Background
Scientific paper
I describe briefly the Cosmic Microwave Background (CMB) physics, which explains why high accuracy observations of its spatial structure are a unique observational tool to test our cosmological models, determine the global cosmological parameters, and constrain observationally the physics of the early Universe. I also briefly survey the many experiments that have measured the anisotropies of the CMB and led to crucial advances in observational cosmology. The somewhat frantic series of new results has culminated in the outcome of the WMAP satellite, which confirmed earlier results, set new standards of accuracy, and suggested that the Universe may have reionized earlier than anticipated. Many more CMB experiments are currently taking data or being planned, offering opportunities to challenge further the current concordance model. The large increase in accuracy promises the possibility of falsifying or consolidating even more strongly the current paradigm, which has already met with considerable predictive success.
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