@article{b2d468e69ad74426b1ca48dd988c6468,
title = "SDSS J1029+2623: A gravitationally lensed quasar with an image separation of 22″.5",
abstract = "We report the discovery of a cluster-scale lensed quasar, SDSS J1029+2623, selected from the Sloan Digital Sky Survey. The lens system exhibits two lensed images of a quasar at zs = 2.197. The image separation of 22″.5 makes it the largest separation lensed quasar discovered to date. The similarity of the optical spectra and the radio loudnesses of the two components support the lensing hypothesis. Images of the field show a cluster of galaxies at zl ∼ 0.55 that is responsible for the large image separation. The lensed images and the cluster light center are not collinear, which implies that the lensing cluster has a complex structure.",
keywords = "Galaxies: Clusters: General, Gravitational lensing",
author = "Naohisa Inada and Masamune Oguri and Tomoki Morokuma and Mamoru Doi and Naoki Yasuda and Becker, {Robert H.} and Richards, {Gordon T.} and Kochanek, {Christopher S.} and Issha Kayo and Kohki Konishi and Hiroyuki Utsunomiya and Shin, {Min Su} and Strauss, {Michael A.} and Sheldon, {Erin S.} and York, {Donald G.} and Hennawi, {Joseph F.} and Schneider, {Donald P.} and Xinyu Dai and Masataka Fukugita",
note = "Funding Information: 18 IRAF is distributed by the National Optical Astronomy Observatories, which are operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation. Funding Information: This work was supported in part by Department of Energy contract DE-AC02-76SF00515. A portion of this work was also performed under the auspices of the US Department of Energy, National Nuclear Security Administration by the University of California, Lawrence Livermore National Laboratory under contract W-7405-Eng-48. The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc. This work made use of the Very Large Array at the NRAO, and we thank NRAO for a rapid response time award. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the NSF, the US DOE, NASA, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, Cambridge University, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, The Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington.",
year = "2006",
month = dec,
day = "20",
doi = "10.1086/510671",
language = "English (US)",
volume = "653",
pages = "L97--L100",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2 II",
}