**Publication date:** n/a 1987

**Abstract:**

A fully general relativistic nonlinear model of the formation of massive

neutrino halos in an Einstein-Straus universe was given by Fabbri,

Jantzen and Ruffini (1982). The paper considers the role which a

nonvanishing, repulsive cosmological constant Lambda greater than 0,

admissible by observational limits, can have in the FJR model. The main

conclusion is that the influence of Lambda is negligible in the FJR

model for massive neutrinos with mass of about 10 eV, indicated by

recent observations of SN 1987a. On the other hand, the cosmological

constant is relevant in the model, if neutrinos have low mass, less than

0.2 eV.

**Authors:**

Stuchlik, Zdenek;