Improved astronomical limits on the neutrino mass

Details Improved astronomical limits on the neutrino mass Improved astronomical limits on the neutrino mass

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvl..54.2720m&link_type=abstract

Physical Review Letters, Volume 54, Issue 25, June 24, 1985, pp.2720-2722

Astronomy and Astrophysics

Astrophysics

20

Particle-Theory And Field-Theory Models Of The Early Universe, Fundamental Aspects Of Astrophysics

Scientific paper

Lower limits for the neutrino mass are obtained if one flavor of neutrino is predominantly responsible for the dark matter in galaxies. From rotation curves of spiral galaxies, it is found that the neutrino mass must exceed 35 h1/2eV (where h is the Hubble constant in units of 100 km s-1Mpc-1) if the velocity distribution of halo neutrinos is isotropic. If radial dispersion dominates, limits are slightly weakened. These results do not rely on a specific form of the phase-space distribution of halo neutrinos.

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