Unstable neutrinos can do it!

Details Unstable neutrinos can do it! Unstable neutrinos can do it!

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987gregr..19..763v&link_type=abstract

General Relativity and Gravitation, Volume 19, Issue 8, pp.763-770

Mathematics

Logic

Cosmology:Neutrinos, Neutrinos:Cosmology

Scientific paper

We present a cosmological scenario with unstable neutrinos which decay into a light neutrino and a relativistic boson. Theoretical and observational constraints severely narrow the values of mass and of lifetime of neutrinos. However, within this range, we can construct models with (i)Ω = 1, (ii) age of the universe ≳ 13 billion years (b.y.) and (iii)h 0 -0.5. The dynamical modeling shows that (a) the initial condensates of primordialν L are disrupted by the decay, lowering their masses to acceptable values ~1012 M&sun;, (b) the relativistic boson contributes nearly 0.25 toΩ, and (c) there emerge two prominent scales in dark matter distribution, one with a mass ~1012 M&sun; distributed over ˜200 kpc around galaxies and another component with density ˜10-27 g cm-3 distributed over ˜ 1 Mpc. The model agrees with observations at all scales.

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