Anomalies in the cosmic background radiation of the universe are they real?

A more accurate picture provides new insights

Map of the CosmoStat secondary contributions to the diffuse background (click to enlarge)

A European team, involving researchers from the l'Ecole Polytechnique Fédérale de Lausanne (EPFL) and the Astrophysical Department Sap-AIM of CEA-Irfu, has found that some of the defects in the Cosmic Microwave Background of the universe present in the images obtained by the WMAP and Planck satellites may only be due to poor image reconstruction and incomplete subtraction of the contributions of our own galaxy. These results are published in the Journal of Cosmology and Astroparticle Physics August 2014.

For more information, see the French version

Contacts : Anaïs RASSAT, Jean-Luc STARCK

Publication :
“Planck CMB Anomalies: Astrophysical and Cosmological Foregrounds and the Curse of Masking”
A. Rassat, J.-L. Starck, P. Paykari, F. Sureau, J. Bobin, in press in Journal of Cosmology and Astroparticle Physics (JCAP), for an pour electronic version : http://arxiv.org/abs/1405.1844

See : "Presse Release from CEA" (4 August 2014)
: "Press release from Ecole Polytechnique Fédérale de Lausanne" (4 August 2014)

#3482 - Last update : 08/04 2014

Nuclear Physics Division

Institute of Research into the Fundamental Laws of the Universe