How Sensitive Are Weak Lensing Statistics to Dark Energy Content?
نویسندگان
چکیده
منابع مشابه
How Sensitive Are Weak Lensing Statistics to Dark Energy Content?
Future weak lensing surveys will directly probe the clustering of dark matter, in addition to providing a test for various cosmological models. Recent studies have provided us with the tools which can be used to construct the complete probability distribution function for convergence fields. It is also possible to construct the bias associated with the hot-spots in convergence maps. These techn...
متن کاملWeak lensing and dark energy
We study the power of upcoming weak lensing surveys to probe dark energy. Dark energy modifies the distance-redshift relation as well as the matter power spectrum, both of which affect the weak lensing convergence power spectrum. Some dark-energy models predict additional clustering on very large scales, but this probably cannot be detected by weak lensing alone due to cosmic variance. With rea...
متن کاملWeak lensing, dark matter and dark energy
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 requi...
متن کاملStatistics of dark matter haloes expected from weak lensing surveys
The distortion of the images of faint high-redshift galaxies can be used to probe the intervening mass distribution. This weak gravitaional lensing effect has been used recently to study the (projected) mass distribution of several clusters at intermediate and high redshifts. In addition, the weak lensing effect can be employed to detect (dark) matter concentrations in the Universe, based on th...
متن کاملPredicted Dark Energy Constraints using 3D Weak Lensing
I hereby present two different methods that will allow weak lensing shape measurements of galaxies combined with redshift information – 3D weak lensing – to constrain the dark energy equation of state. The two methods are the geometric ratio test (Taylor et al. 2007) and a shear harmonic test (Heavens et al. 2006). The results presented here use a Fisher matrix approach for each method to place...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2003
ISSN: 0004-637X,1538-4357
DOI: 10.1086/345425