Objectif "During the last decade, a strikingly successful cosmological concordance model has been established. With only six free parameters, nearly all observables, comprising millions of data points, may be fitted with outstanding precision. However, in this beautiful picture a few ""blemishes"" have turned up, apparently not consistent with the standard model: While the model predicts that the universe is isotropic (i.e. looks the same in all directions) and homogeneous (i.e. the statistical properties are the same everywhere), subtle hints of the contrary are now seen. For instance, peculiar preferred directions and correlations are observed in the cosmic microwave background; some studies considering nearby galaxies suggest the existence of anomalous large-scale cosmic flows; a study of distant quasars hints towards unexpected large-scale correlations. All of these reports are individually highly intriguing, and together they hint toward a more complicated and interesting universe than previously imagined -- but none of the reports can be considered decisive. One major obstacle in many cases has been the relatively poor data quality.This is currently about to change, as the next generation of new and far more powerful experiments are coming online. Of special interest to me are Planck, an ESA-funded CMB satellite currently taking data; QUIET, a ground-based CMB polarization experiment located in Chile; and various large-scale structure (LSS) data sets, such as the SDSS and 2dF surveys, and in the future Euclid, a proposed galaxy survey satellite also funded by ESA. By combining the world s best data from both CMB and LSS measurements, I will in the proposed project attempt to settle this question: Is our universe really anisotropic? Or are these recent claims only the results of systematic errors or statistical flukes? If the claims turn out to hold against this tide of new and high-quality data, then cosmology as a whole may need to be re-written." Champ scientifique natural sciencesphysical sciencestheoretical physicsparticle physicsengineering and technologymechanical engineeringvehicle engineeringaerospace engineeringsatellite technologynatural sciencesphysical sciencesastronomyphysical cosmology Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-SG-PE9 - ERC Starting Grant - Universe sciences Appel à propositions ERC-2010-StG_20091028 Voir d’autres projets de cet appel Régime de financement ERC-SG - ERC Starting Grant Institution d’accueil UNIVERSITETET I OSLO Contribution de l’UE € 1 500 000,00 Adresse PROBLEMVEIEN 5-7 0313 Oslo Norvège Voir sur la carte Région Norge Oslo og Viken Oslo Type d’activité Higher or Secondary Education Establishments Chercheur principal Hans Kristian Kamfjord Eriksen (Prof.) Contact administratif Ingse Noremsaune (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire UNIVERSITETET I OSLO Norvège Contribution de l’UE € 1 500 000,00 Adresse PROBLEMVEIEN 5-7 0313 Oslo Voir sur la carte Région Norge Oslo og Viken Oslo Type d’activité Higher or Secondary Education Establishments Chercheur principal Hans Kristian Kamfjord Eriksen (Prof.) Contact administratif Ingse Noremsaune (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée