[Cosmo-torun] a fourth neutrino (sterile neutrino)?

[Boud Roukema]

hi everyone,

Even if the electron, tau and muon neutrinos are usually
considered to be of too low mass to be relevant for non-baryonic
dark matter, it looks like there are several hints that a fourth,
"sterile" neutrino exists:
http://cosmocoffee.info/viewtopic.php?p=4864

It's not clear to me what this could/would imply for the
sterile neutrino's mass...

pozdr
boud