Model Dependence of Astrophysical Lower Bounds on the Neutrino Mass
19894 pages
Published in:
- Phys.Rev.Lett. 63 (1989) 1038-1041
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Abstract: (APS)
Astrophysical lower bounds on the neutrino mass require assumptions about the phase-space distribution in 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 much less restrictive condition on the neutrino mass, showing that bounds such as that of Tremaine and Gunn are model dependent. I conclude 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.- NEUTRINO: MASS
- MASS: NEUTRINO
- LOWER LIMIT
- dark matter
- NEUTRINO: RADIATIVE DECAY
- RADIATIVE DECAY: NEUTRINO
- COSMIC RADIATION: PARTICLE SOURCE
- THERMODYNAMICS: PHASE SPACE
- NUMERICAL CALCULATIONS
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