The size of clusters in a neutrino-dominated universe

Details The size of clusters in a neutrino-dominated universe The size of clusters in a neutrino-dominated universe

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.209p..27w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 209, July 15, 1984, p. 27P-31P. NASA-supported research

Astronomy and Astrophysics

Astronomy

53

Galactic Clusters, Galactic Evolution, Neutrinos, Particle Mass, Universe, Cosmology, Density Distribution, X Ray Sources

Scientific paper

Quite soon after the first collapse of structure, almost half the matter in a neutrino-dominated universe is expected to reside in clusters. The masses and binding energies of these neutrino clusters are too large for them to be identified with observed galaxy clusters. Even if such objects were able to suppress all galaxy formation, their X-ray emission would, however, make them highly visible if more than 2.5 percent of their mass was in ordinary matter. Such a low baryon density leads to insuffient cooling for galaxies to form in pancakes. A neutrino-dominated universe appears to conflict with observation irrespective of the details of the processes which govern galaxy formation.

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