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Astrophysics > Cosmology and Nongalactic Astrophysics

arXiv:1503.07863 (astro-ph)
[Submitted on 26 Mar 2015 (v1), last revised 14 Aug 2015 (this version, v2)]

Title:A First Detection of the Acoustic Oscillation Phase Shift Expected from the Cosmic Neutrino Background

Authors:Brent Follin, Lloyd Knox, Marius Millea, Zhen Pan
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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 (CMB) temperature power spectrum.
Comments: 5 pages, 3 figures
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1503.07863 [astro-ph.CO]
  (or arXiv:1503.07863v2 [astro-ph.CO] for this version)
  https://doi.org/10.48550/arXiv.1503.07863
Journal reference: Phys. Rev. Lett. 115, 091301 (2015)
Related DOI: https://doi.org/10.1103/PhysRevLett.115.091301

Submission history

From: Brent Follin [view email]
[v1] Thu, 26 Mar 2015 20:00:20 UTC (826 KB)
[v2] Fri, 14 Aug 2015 22:39:45 UTC (827 KB)
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