2015/03/31 by Brent Follin, Lloyd Knox, Marius Millea +1 · 1 citation
Physics and Astronomy · #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevlett.115.091301
published as Phys. Rev. Lett. 115, 091301 (2015) · 5 pages, 3 figures
arxiv created 2015/08/14 · arxiv updated 2015/09/02
The unimpeded relativistic propagation of cosmological neutrinos prior to recombination of the baryon-photon plasma alters gravitational potentials and therefore the details of the time-dependent gravitational driving of acoustic oscillations. We report here a first detection of the resulting shifts in the temporal phase of the oscillations, which we infer from their signature in the Cosmic Microwave Background (CMB) temperature power spectrum.