Weak lensing, dark matter and dark energy

Details Weak lensing, dark matter and dark energy Weak lensing, dark matter and dark energy

2010-01-11

arxiv.org/abs/1001.1758v3

Gen. Rel. Grav. 42, 2177 (2010)

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Invited review article for the GRG special issue on gravitational lensing (P. Jetzer, Y. Mellier and V. Perlick Eds.). V3: sub

Scientific paper

10.1007/s10714-010-1051-z

Weak gravitational lensing is rapidly becoming one of the principal probes of dark matter and dark energy in the universe. In this brief review we outline how weak lensing helps determine the structure of dark matter halos, measure the expansion rate of the universe, and distinguish between modified gravity and dark energy explanations for the acceleration of the universe. We also discuss requirements on the control of systematic errors so that the systematics do not appreciably degrade the power of weak lensing as a cosmological probe.

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