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Phys. Rev. Lett. 103, 171301 (2009) [4 pages]

Cosmic Neutrino Last Scattering Surface

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Scott Dodelson1,2,3 and Mika Vesterinen4
1Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, USA
2Department of Astronomy & Astrophysics, The University of Chicago, Chicago, Illinois 60637-1433, USA
3Kavli Institute for Cosmological Physics, Chicago, Illinois 60637-1433, USA
4The School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom

See Also: Erratum

Received 23 July 2009; published 19 October 2009

See accompanying Physics Focus

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=380 000 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.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.171301
DOI:
10.1103/PhysRevLett.103.171301
PACS:
95.35.+d, 95.85.Ry

See Also

Erratum: Scott Dodelson and Mika Vesterinen, Erratum: Cosmic Neutrino Last Scattering Surface [Phys. Rev. Lett. 103, 171301 (2009)], Phys. Rev. Lett. 103, 249901 (2009).

 
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