Publication date: Jan 1987
A fully general relativistic non-linear model of the formation of
massive neutrino halos in an Einstein-Straus universe was given by
Fabbri, Jantzen and Ruffini. Here the author considers the role which a
non-vanishing, repulsive cosmological constant Λ > 0, admissible by
observational limits, can have in the FJR model.