Hervé Dole (IAS, Université Paris-Sud), Planck and the large scale structures

jeudi 22 janv. 2015, 14:00 → 15:00 Europe/Paris

LPNHE

Planck, the European Space Agency's science cornerstone mission launched in 2009 dedicated to cosmology, has measured the relic radiation from the Big Bang (the Cosmic Microwave Background, CMB) with improved sensitivity and resolution, in order to test theories on the birth and evolution of the Universe and its large-scale content. In spring 2013, we released the first cosmological results, and in early 2015 we will release the final data. I will review the main results. In particular, thanks to the best ever measured map of the CMB, we can improve our knowledge about the age, content and evolution of our Universe, as well as, for the first time, the very first moments (inflation) or the growth of structures. Polarization results are also promissing. I will also mention the technological challenge (the HFI instrument is cooled at 0.1K in space) that made this mission a success. I will then focus on topics related to large scale structure, especially galaxy clusters, cosmic infrared background with an emphasis of the newly discovery of z>2 galaxies, lensed or clustered, confirmed by Herschel. More information: - L'instrument HFI de Planck a été réalisé sous la maitrise d'oeuvre de l'IAS et sous la responsabilité de Jean-Loup Puget - Planck ESA web site: http://www.esa.int/Our_Activities/Space_Science/Planck - Planck papers: http://www.cosmos.esa.int/web/planck/publications