“School of Astronomy”
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| Paper IPM / Astronomy / 12438 |
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We investigate observational constraints on the normal branch of the warped DGP braneworld cosmology by using observational data from Type Ia Supernovae (SNIa), baryon acoustic oscillations (BAO), cosmic microwave background (CMB) and baryon gas mass fraction of cluster of galaxies. The best fit values of model free parameters are: Ωm=0.240-0.130+0.050 and Ω=0.000+0.014 at 1�? confidence interval by using gold sample SNIa + CMB shift parameter + BAO + gas mass fraction of baryons in cluster of galaxies. The results for essence sample SNIa combined with CMB shift parameter, BAO and baryon gas mass fraction correspond to: Ωm=0.220-0.170+0.020 and Ω=0.000+0.025 at 68.3
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