Dynamical interactions and astrophysical effects of stable heavy neutrinos

Details Dynamical interactions and astrophysical effects of stable heavy neutrinos Dynamical interactions and astrophysical effects of stable heavy neutrinos

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978aj.....83.1050s&link_type=abstract

Astronomical Journal, vol. 83, Sept. 1978, p. 1050-1061.

Astronomy and Astrophysics

Astrophysics

71

Astrophysics, Cosmology, Gravitational Collapse, Neutrinos, Universe, Weak Energy Interactions, Energy Dissipation, Energy Transfer, Galactic Clusters, Galactic Evolution, Stellar Evolution, Stellar Structure

Scientific paper

Astrophysical consequences of the existence of any massive stable neutral lepton, and of heavy stable neutrinos in particular, are investigated. The extent to which heavy neutrinos may cluster gravitationally is studied, and it is suggested that heavy neutrinos might supply the dominant mass on large scales in galaxies and clusters of galaxies. The collapse of a gas consisting of nonrelativistic nondegenerate inert heavy neutrinos is analyzed, some specific simplified cases of collapse in which the neutrinos are treated as test particles are examined, and effects due to the self-gravity of the neutrinos are discussed. It is found that the ratio of heavy neutrinos to ordinary matter is preserved in any structures formed by dissipationless collapse and that the heavy neutrinos may dominate the total mass in such objects. Implications of these results are considered for galaxy formation, the masses of galaxies and clusters, and stellar structure and evolution.

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