Looking for an extra dimension with tomographic cosmic shear

Details Looking for an extra dimension with tomographic cosmic shear Looking for an extra dimension with tomographic cosmic shear

2004-07-22

arxiv.org/abs/astro-ph/0407489v4

Phys.Rev. D71 (2005) 024026

Astronomy and Astrophysics

Astrophysics

7 pages, 4 figures, some typos in published version are corrected here

Scientific paper

10.1103/PhysRevD.71.024026

The cosmic acceleration was discovered in one of the brane-based models. We are interested in discriminating this model from the dark energy by tomographic cosmic shear. Growth factors are different in the two models when one adjusts parameters to get nearly identical H(z). The two models could be distinguished with independent determinations of both geometrical factors and the growth factor. We introduce new parameterizations to separate the influence of geometry and the influence of growth on cosmic shear maps. We find that future observations will be able to distinguish between both models.

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