This work presents several works related to the impact of neutrinos in cosmology. We study the impact on the Cosmic Microwave Background of several neutrino-related parameters (mass, abundance, neutrino-antineutrino asymmetry, non-thermal distorsions, non-standard couplings with other species, mass and abundance of additional sterile neutrinos). We present new numerical methods for computing these effects efficiently. We use current data to derive several new bounds on these parameters, and finally, we study the sensitivity of future cosmological experiments to these quantities.
| Identifer | oai:union.ndltd.org:CCSD/oai:tel.archives-ouvertes.fr:tel-01068758 |
| Date | 14 March 2014 |
| Creators | Lesgourgues, Julien |
| Source Sets | CCSD theses-EN-ligne, France |
| Language | English |
| Detected Language | English |
| Type | habilitation ࠤiriger des recherches |
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