Model dependence of astrophysical lower bounds on the neutrino mass

Details Model dependence of astrophysical lower bounds on the neutrino mass Model dependence of astrophysical lower bounds on the neutrino mass

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvl..63.1038r&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 63, Sept. 4, 1989, p. 1038-1041.

Statistics

Computation

13

Dark Matter, Neutrinos, Nuclear Astrophysics, Particle Mass, Astronomical Models, Computational Astrophysics, Dwarf Galaxies, Equations Of State, Particle Energy

Scientific paper

Astrophysical lower bounds on the neutrino mass require assumptions about the phase-space distribution in the dark-matter halos. Even with perfect spherical symmetry, a collisionless dark-matter halo can have an anisotropic phase-space distribution from angular momentum conservation. An example gives a much less restrictive condition on the neutrino mass, showing that bounds such as that of Tremaine and Gunn (1979) are model-dependent. It is concluded that current mass bounds on neutrinos derived from dwarf-galaxy rotation curves are overly restrictive, so that neutrinos in the mass range of 10-100 eV remain a viable candidate for galactic dark matter.

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