New constraints on the reheating temperature of the universe after WMAP-5

Details New constraints on the reheating temperature of the universe after WMAP-5 New constraints on the reheating temperature of the universe after WMAP-5

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aph....30..192d&link_type=abstract

Astroparticle Physics, Volume 30, Issue 4, p. 192-195.

Physics

3

Scientific paper

We report new constraints on the reheating temperature of the universe by analyzing the recent cosmic microwave background (CMB) data from the WMAP five year survey. From WMAP-5 data alone we found an upper limit at 95% c.l. of Trh > 2 MeV, while including external priors from the SDSS red luminous galaxy survey and age constraints improves the limit to Trh > 3.2 MeV (again at 95% c.l.). Future analysis from combined CMB and weak lensing surveys as Planck and DUNE 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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