Mathematics – Logic
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...285..495w&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 285, Oct. 15, 1984, p. 495-500.
Mathematics
Logic
67
Big Bang Cosmology, Cosmic Rays, Elementary Particle Interactions, Neutrinos, Radiation Absorption, Relic Radiation, Energy Spectra, Particle Flux Density, Quasars
Scientific paper
The proposal to search for relic neutrinos through their absorption effect on the neutrino cosmic-ray flux is carefully examined. Resonant absorption at E(v) of about 10 to the 21st eV-squared/m(1+z), where m is the neutrino mass and z is the cosmological redshift of the neutrino source, has been previously predicted. However, it is shown that detection of the neutrino flux in the absorption region requires an improbable power output for a single source. A summation over a distribution of sources is then performed, using the quasar distribution as a model. This summation increases the neutrino flux but spreads the absorption dip. It is concluded that within the context of big bang cosmology, detection of relic neutrinos through their absorption effects depends crucially on whether or not there exist sources at large z, emitting a sufficient flux of ultraenergy neutrinos. The astrophysical conditions which allow detection appear very unlikely but not impossible.
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