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

Journal Article · · Astrophysical Journal Letters
DOI:https://doi.org/10.1086/510671· OSTI ID:895260
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:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF00515;
OSTI ID:
895260
Report Number(s):
SLAC-PUB-12194; astro-ph/0611275
Journal Information:
Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters
Country of Publication:
United States
Language:
English

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