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IPM
30
YEARS OLD

“School of Astronomy”

Paper   IPM / Astronomy / 12438
   School of Astronomy
  Title: Observational Constraints on the Normal Branch of a Warped DGP Cosmology
  Author(s):
1 . T. Azizi
2 . M. Sadegh. Movahed
3 . Kourosh Nozari
  Status: Published
  Journal: New Astronomy
  Vol.: 17
  Year: 2012
  Pages: 424 - 432
  Supported by: IPM
  Abstract:
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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