Brans-Dicke model constrained from Big Bang nucleosynthesis and magnitude redshift relations of Supernovae

Details Brans-Dicke model constrained from Big Bang nucleosynthesis and magnitude redshift relations of Supernovae Brans-Dicke model constrained from Big Bang nucleosynthesis and magnitude redshift relations of Supernovae

2010-07-07

arxiv.org/abs/1007.1060v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Submitted to A&A, 4 pages, 3 figures

Scientific paper

The Brans-Dicke model with a variable cosmological term ($BD\Lambda$) has been investigated with use of the coupling constant of $\omega=10^4$. Parameters inherent in this model are constrained from comparison between Big Bang nucleosynthesis and the observed abundances. Furthermore, the magnitude redshift ($m-z$) relations are studied for $BD\Lambda$ with and without another constant cosmological term in a flat universe. Observational data of Type Ia Supernovae are used in the redshift range of $0.01

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