Extremely High Energy Neutrinos, Neutrino Hot Dark Matter, and the Highest Energy Cosmic Rays

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.5505· OSTI ID:677221

Yoshida, S ^[1]; Sigl, G; Lee, S ^[2]

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1. Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188-8502 (Japan)
2. Department of Physics and Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433 (United States)

Extremely high energy ({approximately}10{sup 22} eV ) cosmic neutrino beams initiate high energy particle cascades in the background of relic neutrinos from the big bang. We perform numerical calculations to show that such cascades could contribute more than 10{percent} to the observed cosmic ray flux above 3{times}10{sup 19} eV if neutrinos have {approximately}eV masses. The required intensity of primary neutrinos could be consistent with astrophysical models for their production {ital if} the maximum neutrino energy reaches to {approximately}10{sup 22} eV {ital and} the massive neutrino dark matter is locally clustered. Future observations of ultrahigh energy cosmic rays will lead to an indirect but practical search for neutrino dark matter. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 677221
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COSMIC NEUTRINOS
COSMIC RAY SOURCES
COSMOLOGICAL MODELS
COSMOLOGY
NEUTRINO-NEUTRINO INTERACTIONS
NONLUMINOUS MATTER
NUMERICAL ANALYSIS
NUMERICAL SOLUTION