title: First Detection of the Acoustic Oscillation Phase Shift Expected from the Cosmic Neutrino Background.
abstract: 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 temperature power spectrum.
authors.affiliation: University of California, Davis, California, USA.
authors.forename: Brent
authors.initials: B
authors.lastname: Follin
authors.affiliation: University of California, Davis, California, USA.
authors.forename: Lloyd
authors.initials: L
authors.lastname: Knox
authors.affiliation: University of California, Davis, California, USA.
authors.forename: Marius
authors.initials: M
authors.lastname: Millea
authors.affiliation: University of California, Davis, California, USA.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Pan