Reheated Universe by unstable neutrinos

Journal Article · Mon Aug 29 00:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.1046· OSTI ID:7137847

Fukugita, M

The possibility is explored that moderately massive neutrinos (1--10 keV) with a lifetime shorter than the age of the Universe, decaying predominantly without emitting radiation but with a small branching ratio to the photon channel, have reheated the Universe after recombination. For a reasonable parameter range, it is possible to explain the recently observed spectral distortion of the cosmic microwave background radiation (CBR). Implications are also discussed for the interpretation of the anisotropy measurement of the CBR.

• Research Organization: Institute for Advanced Study, Princeton, New Jersey 08540
• OSTI ID: 7137847
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 61:9
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC NEUTRINOS
LIFETIME
UNIVERSE
ANISOTROPY
BACKGROUND RADIATION
COSMOLOGY
HEATING
MICROWAVE RADIATION
RECOMBINATION
COSMIC RADIATION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
RADIATIONS
640101* - Astrophysics & Cosmology- Cosmic Radiation
640106 - Astrophysics & Cosmology- Cosmology