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Since galaxy clusters sit at the high-end of the mass function, the number of galaxy clusters both massive and concentrated enough to yield particularly large Einstein radii poses useful constraints on cosmological and structure formation…

Strong gravitational lensing provides unique opportunities to investigate the mass distribution at the cores of galaxy clusters and to study high redshift galaxies. Using $94$ strong lensing models of $74$ cluster fields from the…

宇宙学与河外天体物理 · 物理学 2022-04-06 Carter Fox , Guillaume Mahler , Keren Sharon , Juan D. Remolina González

We carry out a detailed strong lensing analysis of a sub-sample of eight galaxy clusters of the CLASH survey, in the redshift range of $ z_{\rm cluster} = [0.23-0.59]$, using extensive spectroscopic information, primarily MUSE archival data…

Gravitational lens modeling is presented for the first discovered example of a three-component source for which each component is quadruply imaged. The lens is a massive galaxy member of the cluster Cl J0152.7-1357 at z ~ 0.84. Taking…

天体物理学 · 物理学 2009-11-13 C. Grillo , M. Lombardi , P. Rosati , G. Bertin , R. Gobat , R. Demarco , C. Lidman , V. Motta , M. Nonino

We report the discovery and spectroscopic confirmation of three gravitationally-lensed images of a galaxy at z=3.9 in the background of a distant, rich cluster of galaxies at z=0.83, on the basis of observations with Faint Object Camera And…

We present results from a spectroscopic program targeting 26 strong lensing cluster cores that were visually identified in the Sloan Digital Sky Survey (SDSS) and the Second Red-Sequence Cluster Survey (RCS-2). The 26 galaxy cluster lenses…

宇宙学与河外天体物理 · 物理学 2011-02-22 Matthew B. Bayliss , Joseph F. Hennawi , Michael D. Gladders , Benjamin P. Koester , Keren Sharon , Hakon Dahle , Masamune Oguri

The galaxy cluster 1E0657-56 (z = 0.296) is remarkably well-suited for addressing outstanding issues in both galaxy evolution and fundamental physics. We present a reconstruction of the mass distribution from both strong and weak…

Strong gravitational lensing is a unique tool to model with great accuracy the inner mass distribution of massive galaxy clusters. In particular, clusters with large Einstein radii provide a wealth of multiply imaged systems in the cluster…

星系天体物理 · 物理学 2009-11-13 Johan Richard , Liuyi Pei , Marceau Limousin , Eric Jullo , Jean-Paul Kneib

We present a strong lensing analysis of the galaxy cluster PSZ1 G311.65-18.48 (z=0.443) using multi-band observations with Hubble Space Telescope, complemented with VLT/MUSE spectroscopic data. The MUSE observations provide redshift…

The recent discovery of a large number of galaxy clusters using the Sunyaev-Zel'dovich (SZ) effect has opened a new era on the study of the most massive clusters in the Universe. Multi-wavelength analyses are required to understand the…

宇宙学与河外天体物理 · 物理学 2015-06-15 Cristóbal Sifón , Felipe Menanteau , John P. Hughes , Mauricio Carrasco , L. Felipe Barrientos

We identify a strong lensing galaxy in the cluster IRC 0218 (also known as XMM-LSS J02182$-$05102) that is spectroscopically confirmed to be at $z=1.62$, making it the highest-redshift strong lens galaxy known. The lens is one of the two…

We present a new high-precision parametric strong lensing model of the galaxy cluster MACS J0416.1-2403, at z=0.396, which takes advantage of the MUSE Deep Lensed Field (MDLF), with 17.1h integration in the northeast region of the cluster,…

We present a detailed strong lensing (SL) mass reconstruction of the core of the galaxy cluster MACSJ 2129.4-0741 ($\rm z_{cl}=0.589$) obtained by combining high-resolution HST photometry from the CLASH survey with new spectroscopic…

The core mass of galaxy clusters is both an important anchor of the radial mass distribution profile and probe of structure formation. With thousands of strong lensing galaxy clusters being discovered by current and upcoming surveys,…

宇宙学与河外天体物理 · 物理学 2021-10-27 J. D. Remolina González , K. Sharon , G. Mahler , C. Fox , C. A. Garcia Diaz , K. Napier , L. E. Bleem , M. D. Gladders , N. Li , A. Niemiec

Spectroscopic surveys of massive galaxy clusters reveal the properties of faint background galaxies, thanks to the magnification provided by strong gravitational lensing. We present a systematic analysis of integral-field-spectroscopy…

In the era of large surveys, yielding thousands of galaxy clusters, efficient mass proxies at all scales are necessary in order to fully utilize clusters as cosmological probes. At the cores of strong lensing clusters, the Einstein radius…

宇宙学与河外天体物理 · 物理学 2020-10-21 J. D. Remolina González , K. Sharon , B. Reed , N. Li , G. Mahler , L. E. Bleem , M. Gladders , A. Niemiec , A. Acebron , H. Child
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