A preference for a non-zero neutrino mass from cosmological data

  title={A preference for a non-zero neutrino mass from cosmological data},
  author={S. W. Allen and Robert W. Schmidt and Sarah Bridle},
  journal={Monthly Notices of the Royal Astronomical Society},
We present results from the analysis of cosmic microwave background (CMB), large-scale structure (galaxy redshift survey) and X-ray galaxy cluster (baryon fraction and X-ray luminosity function) data, assuming a geometrically flat cosmological model and allowing for tensor components and a non-negligible neutrino mass. From a combined analysis of all data, assuming three degenerate neutrino species, we measure a contribution of neutrinos to the energy density of the Universe, Omega(nu)h(2) = 0… 

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