The standard cosmological model and CMB anisotropies |
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| Institution: | 1. Sodankylä Geophysical Observatory of the University of Oulu, Finland;2. Institute of Seismology of the University of Helsinki, Finland;3. University of Grenoble, France;4. University of Strasbourg, France;5. Institute of Geodesy and Geophysics, Vienna University of Technology, Austria;6. Geophysical Institute of the Czech Academy of Sciences, Prague, Czech Republic;7. Institute of Geophysics ETH, Zürich, Switzerland;8. Institute of Geospheres Dynamics of the Russian Academy of Sciences, Moscow, Russia;9. The Kola Regional Seismological Centre of the Russian Academy of Sciences, Russia;10. Geophysical Centre of the Russian Academy of Sciences, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Russia;11. Swedish National Seismological Network, University of Uppsala, Sweden;12. Institute of Solid Earth Physics, University of Bergen, Norway;13. NORSAR, Norway;14. University of Leeds, UK;1. Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow, Russia;2. Sodankylä Geophysical Observatory of the University of Oulu, Finland |
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| Abstract: | This is a course on cosmic microwave background (CMB) anisotropies in the standard cosmological model, designed for beginning graduate students and advanced undergraduates. “Standard cosmological model” in this context means a Universe dominated by some form of cold dark matter (CDM) with adiabatic perturbations generated at some initial epoch, e.g., Inflation, and left to evolve under gravity alone (which distinguishes it from defect models). The course is primarily theoretical and concerned with the physics of CMB anisotropies in this context and their relation to structure formation. Brief presentations of the uniform Big Bang model and of the observed large-scale structure of the Universe are given. The bulk of the course then focuses on the evolution of small perturbations to the uniform model and on the generation of temperature anisotropies in the CMB. The theoretical development is performed in the (pseudo-)Newtonian gauge because it aids intuitive understanding by providing a quick reference to classical (Newtonian) concepts. The fundamental goal of the course is not to arrive at a highly exact nor exhaustive calculation of the anisotropies, but rather to a good understanding of the basic physics that goes into such calculations. |
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