Cosmological parameter determination in free-form strong gravitational lens modelling
نویسندگان
چکیده
منابع مشابه
Cosmological parameter determination in free-form strong gravitational lens modelling
We develop a novel statistical strong-lensing approach to probe the cosmological parameters by exploiting multiple redshift image systems behind galaxies or galaxy clusters. The method relies on free-form mass inversion of strong lenses and does not need any additional information other than gravitational lensing. Since in free-form lensing the solution space is a high-dimensional convex polyto...
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Future large ensembles of time delay lenses have the potential to provide interesting cosmological constraints complementary to those of other methods. In a flat universe with constant w including a Planck prior, LSST time delay measurements for ∼ 4, 000 lenses should constrain h to ∼ 0.007 (∼ 1%), Ωde to ∼ 0.005, and w to ∼ 0.026 (all 1-σ precisions). Similar constraints could be obtained by a...
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We combine the Cosmic Lens All-Sky Survey (CLASS) with new Sloan Digital Sky Survey (SDSS) data on the local velocity dispersion distribution function of E/S0 galaxies, φ(σ), to derive lens statistics constraints on ΩΛ and Ωm. Previous studies of this kind relied on a combination of the E/S0 galaxy luminosity function and the Faber-Jackson relation to characterize the lens galaxy population. Ho...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2013
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stt2057