New constraints on cosmological parameters and neutrino properties using the expansion rate of the Universe to z~1.75

Details New constraints on cosmological parameters and neutrino properties using the expansion rate of the Universe to z~1.75 New constraints on cosmological parameters and neutrino properties using the expansion rate of the Universe to z~1.75

2012-01-31

arxiv.org/abs/1201.6658v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

15 pages, 8 figures, 7 tables, submitted to JCAP. This paper presents cosmological parameter constraints obtained with the new

Scientific paper

We have assembled a compilation of observational Hubble parameter measurements estimated with the differential evolution of cosmic chronometers, in the redshift range 04 at 95% confidence level (at 74% confidence level using the Atacama Cosmology Telescope instead). We also put competitive limits on the sum of neutrino masses, m_\nu<0.24 eV at 68% confidence level. These results have been proven to be extremely robust to the initial choice of stellar population synthesis model adopted to estimate H(z).

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