Cosmic Inhomogeneities and Accelerating Expansion. Ho Le Tuan Anh National University of Singapore PAQFT 27-29 Nov 2008. Outline. Concordance model Model with a local void Motivation for suggesting model Model Method to check the model Results with Riess 2007 SNe Gold sample
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Ho Le Tuan Anh
National University of Singapore
PAQFT 27-29 Nov 2008
Ωtotal ~ 1
Ωλ ~ 70%
Due toAppearance of Cosmological Constant λ
Where: λ: Affine parameter
θ: Expansion parameter
j: 1, 2 (inner and outer region) Ω0: Present matter density parameter
λ0: Present dark energy density parameter
Numerically solving equations (1), we can obtain angular and luminosity distance.
to avoid over-complication.
Dark Energy density - Matter density
Confidence contours with 68.3% & 95.4% CL (Profile A)