منابع مشابه
Arc Statistics
We study the strong gravitational lensing properties of galaxy clusters obtained from N-body simulations with standard ΛCDM cosmology. We have used the 32 most massive clusters from a simulation at various redshifts and ray-traced through the clusters to investigate the giant arcs statistics. We have found that ∼ 40 − 50% of the clusters that produce giant arcs give multiple arcs, which agrees ...
متن کاملCluster Arc Statistics
We study the strong gravitational lensing properties of galaxy clusters obtained from N-body simulations with standard ΛCDM cosmology. We have used the 32 most massive clusters from a simulation at various redshifts and ray-traced through the clusters to investigate the giant arcs statistics. We have found that ∼ 40 − 50% of the clusters that produce giant arcs give multiple arcs, which agrees ...
متن کاملGiant Arc Statistics and Cosmological Parameters
We study with semi-analytical methods the statistics of pronounced arcs caused by lensing of galaxies by foreground galaxy clusters. For the number density and redshift distribution of rich clusters we use Press-Schechter theory, normalized on the basis of empirical data. For the background sources we make use of observational results in the Hubble Deep Field. We present results for three diffe...
متن کاملArc Statistics in Clusters: Galaxy Contribution
The frequency with which background galaxies appear as long arcs as a result of gravitational lensing by foreground clusters of galaxies has recently been found to be a very sensitive probe of cosmological models by Bartelmann et al. (1998). They have found that such arcs would be expected far less frequently than observed (by an order of magnitude) in the currently favored model for the univer...
متن کاملGravitationally Lensed Arc Statistics as a Cosmological Probe
We calculate the expected number of gravitationally lensed arcs on the whole sky due to foreground galaxy clusters for different cosmological models. We use the redshift and magnitude distribution for sources in the Hubble Deep Field to describe the background galaxies, and model the foreground galaxy clusters as singular isothermal spheres. We account for the redshift evolution of foreground l...
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ژورنال
عنوان ژورنال: Space Science Reviews
سال: 2013
ISSN: 0038-6308,1572-9672
DOI: 10.1007/s11214-013-9981-x