Prog. Theor. Phys., 70, 603-605 (1983)
Formation of Massive Galactic Halos with Neutrinos
Takao FUJIWARA
Department of Astronomy, Kyoto University, Kyoto 606
(Received May 2 1983)
Collapse of relic neutrinos is investigated numerically under the
condition of spherical symmetry.
Infall of neutrinos produces an envelope with
r(r) ∝ r -2.2,
in good agreement with a density profile expected of a galactic
halo.
Comparison of the results with a mass model of our Galaxy leads to
mn ≃ 30 eV.
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