Cluster lenses
نویسندگان
چکیده
منابع مشابه
Probing the dynamics of cluster-lenses
We propose a new approach to study the dynamical implications of mass models of clusters for the velocity structure of galaxies in the core. Strong and weak lensing data are used to construct the total mass profile of the cluster, which is used in conjunction with the optical galaxy data to solve in detail for the nature of galaxy orbits and the velocity anisotropy in the central regions. We al...
متن کاملDetection and Study of High-redshift Galaxies through Cluster-lenses
We discuss a method to build up and study a sample of distant galaxies, with 2∼ z ∼ 5, using the gravitational amplification effect in cluster-lenses for which the mass distribution is well known. The candidates are selected close to the critical lines at high-z, through photometric redshift estimates on a large wavelength range. With respect to other methods, this procedure allows to reduce th...
متن کاملCLUSTER ALGEBRAS AND CLUSTER CATEGORIES
These are notes from introductory survey lectures given at the Institute for Studies in Theoretical Physics and Mathematics (IPM), Teheran, in 2008 and 2010. We present the definition and the fundamental properties of Fomin-Zelevinsky’s cluster algebras. Then, we introduce quiver representations and show how they can be used to construct cluster variables, which are the canonical generator...
متن کاملAsymmetric Gravitational Lenses in TeVeS and Application to the Bullet Cluster
Aims. We explore the lensing properties of asymmetric matter density distributions in Bekenstein’s Tensor-Vector-Scalar theory (TeVeS). Methods. Using an iterative Fourier-based solver for the resulting non-linear scalar field equation, we numerically calculate the total gravitational potential and derive the corresponding TeVeS lensing maps. Results. Considering variations on rather small scal...
متن کاملEvidence for Tidal Stripping of Dark Matter Halos in Massive Cluster-lenses
In this letter, we present the results of our study of galaxy-galaxy lensing in massive cluster-lenses spanning z = 0.17 to 0.58, utilizing high-quality archival Hubble Space Telescope (HST ) data. Local anisotropies in the shear maps are assumed to arise from dark matter substructure within these clusters. Associating the substructure with bright early-type cluster galaxies, we quantify the pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astronomy and Astrophysics Review
سال: 2011
ISSN: 0935-4956,1432-0754
DOI: 10.1007/s00159-011-0047-3