Constraints on the reheating temperature of the universe from WMAP-5 and future perspectives

Details Constraints on the reheating temperature of the universe from WMAP-5 and future perspectives Constraints on the reheating temperature of the universe from WMAP-5 and future perspectives

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009nuphs.194...39d&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 194, p. 39-44.

Physics

Nuclear Physics

Scientific paper

We report new constraints on the reheating temperature of the Universe by analyzing the Cosmic Microwave Background data from the WMAP five year survey. From WMAP-5 data alone we found an upper limit at 95% c.l. of T>2MeV, while including external priors from the SDSS Red Luminous Galaxy survey and age constraints improves the limit to T>3.2MeV (again at 95% c.l.). Future analysis from combined CMB and weak lensing surveys as Planck and Euclid will improve the the constraints by a factor ˜2. We test the stability of the current upper limits on neutrino masses from cosmology under the hypothesis of non-standard thermal neutrino background.

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