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Title:
Cosmic Neutrino Last Scattering Surface
Authors:
Dodelson, Scott; Vesterinen, Mika
Affiliation:
AA(Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, USA; Department of Astronomy & Astrophysics, The University of Chicago, Chicago, Illinois 60637-1433, USA; Kavli Institute for Cosmological Physics, Chicago, Illinois 60637-1433, USA), AB(The School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom)
Publication:
Physical Review Letters, vol. 103, Issue 17, id. 171301 (PhRvL Homepage)
Publication Date:
10/2009
Origin:
APS
PACS Keywords:
Dark matter, Neutrino, muon, pion, and other elementary particles; cosmic rays
DOI:
10.1103/PhysRevLett.103.171301
Bibliographic Code:
2009PhRvL.103q1301D

Abstract

Neutrinos decoupled from the rest of the cosmic plasma when the Universe was less than one second old, far earlier than the photons, which decoupled at t=380000 years. Surprisingly, though, the last scattering surface of massive neutrinos is much closer to us than that of the photons. Here we calculate the properties of the last scattering surfaces of the three species of neutrinos.
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