Primordial Element Synthesis Calculations with the bigbangonline.org Software Suite

Details Primordial Element Synthesis Calculations with the bigbangonline.org Software Suite Primordial Element Synthesis Calculations with the bigbangonline.org Software Suite

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..dnp.dg010s&link_type=abstract

American Physical Society, Division of Nuclear Physics Annual Meeting, October 25-28, 2006, abstract #DG.010

Physics

Nuclear Physics

Scientific paper

Predictions of the abundances of ^2H, ^4He, and ^7Li synthesized three minutes after the Big Bang can be compared with abundances inferred from observations to constrain the total amount of baryonic matter in the Universe, the number of ν species, and other cosmological parameters. These constraints can be compared to those derived from measurements of the cosmic microwave background. A new online suite of computer codes has been developed at bigbangonline.org to facilitate custom big bang nucleosynthesis (BBN) calculations. Users of this freely available system can specify the latest set of input thermonuclear reaction rates and cosmological parameters to set up their simulation, and the latest primordial abundance observations to determine their constraints. Monte Carlo BBN simulations [1] are also enabled, where uncertainties of the input reaction rates are propagated into uncertainties of the cosmology constraints. The suite features excellent visualization tools and enables sharing of simulation results between Users. Features of the suite and its utilization in a new set of BBN calculations will be presented. [1] M.S. Smith et al., Ap. J. Suppl. 85 (1993) 219.*Managed by UT-Battelle, LLC, for the US D.O.E. under contract DE-AC05-00OR22725.

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