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A nearly symmetric double-image gravitational lens
Joshua N. Winn, Jacqueline N. Hewitt, Alok R. Patnaik +5
We report the discovery of a new double-image gravitational lens resulting from our search for lenses in the southern sky. Radio source PMN J2004-1349 is composed of two compact co…
A Close Separation Double Quasar Lensed by a Gas-Rich Galaxy
Michael D. Gregg, Lutz Wisotzki, Robert Becker +5
In the course of a Cycle 8 snapshot survey, we have discovered that the z=1.565 quasar HE 0512-3329 is a double with image separation 0.644", almost certainly due to gravitational…
CTQ 839: Candidate for the Smallest Projected Separation Binary Quasar
Nicholas D. Morgan, Greg Burley, Edgardo Costa +6
We report the discovery of the new double quasar CTQ 839. This B = 18.3, radio quiet quasar pair is separated by 2.1" in BRIH filters with magnitude differences of delta m_B = 2.5,…