arXiv:astro-ph/0412066·v2·Astrophysics
Indication for Primordial Anisotropies in the Neutrino Background from WMAP and SDSS
Roberto Trotta (Oxford & Geneva University)🇨🇭 · Alessandro Melchiorri (Rome U.)🇮🇹
Abstract
We demonstrate that combining Cosmic Microwave Background anisotropy measurements from the 1st year WMAP observations with clustering data from the SLOAN galaxy redshift survey yields an indication for primordial anisotropies in the cosmological Neutrino Background.
Comments: 4 pages, 4 figures (1 new figure). Discussion expanded following referee suggestions, assumption on the number of massless neutrino families relaxed. Conclusions largely unchanged