Abstract
We constrain , the fractional contribution of neutrinos to the total mass density in the Universe, by comparing the power spectrum of fluctuations derived from the 2 Degree Field Galaxy Redshift Survey with power spectra for models with four components: baryons, cold dark matter, massive neutrinos, and a cosmological constant. Adding constraints from independent cosmological probes we find (at 95% confidence) for a prior of , and assuming the scalar spectral index . This translates to an upper limit on the total neutrino mass for “concordance” values of and the Hubble constant.
- Received 9 April 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.061301
©2002 American Physical Society