engleski

Sterile Neutrino Dark Matter in the Galaxy

The accurate WMAP data [1] have recently provided us with compelling evidence that the Universe is approximately critical on the largest scale. About 73% of its total energy resides is in unclustered dark energy (perhaps in the form of a cosmological constant) and approximately 27% is in nonrelativistic dark matter which clusters gravitationally. Included in this dark matter component is between 4 and 5% of the total energy in baryonic matter, mostly in the form of dark gas and dust. About 0.5% of the total energy accounts for baryonic matter contained in stars. The total energy of the microwave background and relativistic or nonrelativistic active neutrinos is less than about 0.1% of the critical energy of the Universe today.

sterile neutrino ; dark matter

Springer Proceedings in Physics, Volume 98