The Gravitational Lens Candidate FBQ 1633

Details The Gravitational Lens Candidate FBQ 1633 The Gravitational Lens Candidate FBQ 1633

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...196.0704s&link_type=abstract

American Astronomical Society, 196th AAS Meeting, #07.04; Bulletin of the American Astronomical Society, Vol. 32, p.686

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the discovery of the close-separation (0.7") double quasar pair FBQ 1633 from the FIRST Bright QSO Survey. In general, such quasar pairs can result from a physical quasar binary, or from multiple imaging of a single quasar via gravitational lensing. Here we present our ground-based optical imaging, VLA radio mapping, and spectral analysis for FBQ 1633 and discuss the likely nature of the system in terms of the binary/lens hypothesis. We find that although the optical image separation and flux ratios are consistent with gravitational lensing, the identification of only a single radio component and failure to detect the lensing galaxy with HST are difficult to reconcile under the lensing hypothesis.

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