THE REDSHIFT DISTRIBUTION OF GIANT ARCS IN THE SLOAN GIANT ARCS SURVEY
نویسندگان
چکیده
منابع مشابه
Statistics of Giant Arcs in Galaxy Clusters
We study the expected properties and statistics of giant arcs produced by galaxy clusters in a ΛCDM universe and investigate how the characteristics of CDM clusters determine the properties of the arcs they generate. Due to the triaxiality and substructure of CDM halos, the giant arc cross section for individual clusters varies by more than an order of magnitude as a function of viewing angle. ...
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We developed an algorithm to find and characterize gravitationally lensed galaxies (arcs) to perform a comparison of the observed and simulated arc abundance. Observations are from the Cluster Lensing And Supernova survey with Hubble (CLASH). Simulated CLASH images are created using the MOKA package and also clusters selected from the high-resolution, hydrodynamical simulations, MUSIC, over the...
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Asymptotic distribution of the numbers of vertices and arcs of the giant strong component in sparse random digraphs
Two models of a random digraph on n vertices, D(n, number of arcs = m) and D(n,Prob(arc) = p) are studied. In 1990 R. Karp for D(n, p = c/n) and independently T. Luczak for D(n,m = cn) proved that for c > 1, with probability tending to 1, there is an unique strong component of size of order n. Karp showed, in fact, that the giant component has likely size asymptotic to nθ, where θ = θ(c) is the...
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We use high-resolution N-body simulations to study the galaxy-cluster crosssections and the abundance of giant arcs in the ΛCDM model. Clusters are selected from the simulations using the friends-of-friends method, and their crosssections for forming giant arcs are analyzed. The background sources are assumed to follow a uniform ellipticity distribution from 0 to 0.5 and to have an area identic...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2011
ISSN: 2041-8205,2041-8213
DOI: 10.1088/2041-8205/727/1/l26