Cluster-cluster lensing and the case of Abell 383
نویسندگان
چکیده
منابع مشابه
Gravitational Lensing in Galaxy Cluster Abell 1689
Synopsis In this thesis we have set out to study the galaxy cluster Abell 1689 using strong grav-itational lensing. Due to its relative closeness at redshift 0.18 and available archived deep Hubble Space Telescope imaging it presents an ideal opportunity to several diverse studies based on strong gravitational lensing. We start with a brief introduction to cosmology and general relativity as we...
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Aims. This paper is aimed at measuring the main physical properties (mass, velocity dispersion, and total luminosity) of the cluster Abell 2163. Methods. Weak lensing analysis is applied to a deep, one square degree r-band CFHT-Megacam image of the Abell 2163 field. The observed shear is fitted with Single Isothermal Sphere and Navarro-Frenk-White models to obtain the velocity dispersion and th...
متن کاملWeak Lensing Mass Reconstruction of the Galaxy Cluster Abell 209 ⋆
Context. Weak lensing applied to deep optical images of clusters of galaxies provides a powerful tool to reconstruct the distribution of the gravitating mass associated to these structures. Aims. We use the shear signal extracted by an analysis of deep exposures of a region centered around the galaxy cluster ABCG209, at redshift z ∼ 0.2, to derive both a map of the projected mass distribution a...
متن کاملParameterised models for the lensing cluster Abell 1689
Here we apply a recently developed maximum likelihood method for determining best-fit parameterised lens models to observations of the rich lensing cluster Abell 1689. The observations that we use were taken with the ESO/MPG Wide Field Imager. The wide field-of-view enables us to use the weakly lensed images of faint background objects on an unsurpassed range of scales, 0.12 h−1 Mpc < R < 1.8 h...
متن کاملWeak Gravitational Lensing by the Nearby Cluster Abell 3667.
We present two weak lensing reconstructions of the nearby (zcl=0.055) merging cluster Abell 3667, based on observations taken approximately 1 yr apart under different seeing conditions. This is the lowest redshift cluster with a weak lensing mass reconstruction to date. The reproducibility of features in the two mass maps demonstrates that weak lensing studies of low-redshift clusters are feasi...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2011
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2011.20155.x