Measuring dark energy with the shear triplet statistics

Details Measuring dark energy with the shear triplet statistics Measuring dark energy with the shear triplet statistics

2007-02-02

arxiv.org/abs/astro-ph/0702078v1

Mon.Not.Roy.Astron.Soc.377:229-233,2007

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2007.11600.x

The shear triplet statistics is a geometric method to measure cosmological parameters with observations in the weak gravitational lensing regime towards massive haloes. Here, this proposal is considered to probe the dark energy equation of state and its time derivative in view of future wide-field galaxy surveys. A survey with a median redshift of nearly 0.7 and a total area of nearly 10000 square degrees would be pretty effective in determining the dark matter cosmological density and in putting useful constraints on the dark energy properties.

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