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Magnifications of paired micro-images emerging from a micro-lensing critical curve
Luke Weisenbach, Paul Schechter, Joachim Wambsganss
Studies of the inner regions of micro-lensed AGN during caustic crossing events have often relied upon the approximation that the magnification near a fold caustic is inversely pro…
Robust modeling of quadruply lensed quasars (and random quartets) using Witt's hyperbola
Raymond A. Wynne, Paul L. Schechter
We develop a robust method to model quadruply lensed quasars, relying heavily on the work of Witt (1996), who showed that for elliptical potentials, the four image positions, the s…
Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars
A. J. Shajib, S. Birrer, T. Treu +70
Strong-gravitational lens systems with quadruply-imaged quasars (quads) are unique probes to address several fundamental problems in cosmology and astrophysics. Although they are i…
A new quadruple-image gravitational lens in an edge-on disk galaxy at z=0.0956
John R. Lucey, Russell J. Smith, Paul L. Schechter +2
We report the serendipitous discovery of a quadruply-lensed source behind the z=0.095 edge-on disk galaxy 2MASXJ13170000-1405187, based on public imaging survey data from Pan-STARR…
Another Quadruply Lensed Quasar from the VST-ATLAS Survey
P. L. Schechter, T. Anguita, N. D. Morgan +2
We report the quadruple nature of the source WISE 025942.9-163543 as observed in the VST-ATLAS survey. Spectra of the two brightest images show quasar emission lines at z=2.16. The…