SDSS J1029+2623: A Gravitationally Lensed Quasar with an Image Separation of 22.5 Arcseconds

Journal Article · Wed Nov 15 00:00:00 EST 2006 · Astrophysical Journal Letters

DOI:https://doi.org/10.1086/510671· OSTI ID:895260

Inada, Naohisa; Oguri, Masamune; Morokuma, Tomoki; Doi, Mamoru; Yasuda, Naoki; Becker, Robert H; Richards, Gordon T; Kochanek, Christopher S; Kayo, Issha; Konishi, Kohki; Utsunomiya, Hiroyuki; Shin, Min-Su; Strauss, Michael A; Sheldon, Erin S; York, Donald G; Hennawi, Joseph F; Schneider, Donald P; Dai, Xinyu; Fukugita, Masataka

The authors 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 z{sub s} = 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 z{sub l} {approx} 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.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 895260
• Report Number(s): SLAC-PUB-12194; astro-ph/0611275; TRN: US200702%%870
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
HYPOTHESIS
QUASARS
SKY
SPECTRA
Astrophysics
ASTRO
GRQC