58 citations · 79 across the 12 of their papers we have counts for
12 papers
Confirmation of the Finch Flatter-Fainter Relation for the Quadruple Images of Lensed Point Sources
Kaitlyn E. Roman, Paul L. Schechter
Finch et al (2002) derived relations for the summed absolute magnifications of quadruply lensed images that vary inversely with flattening in two alternative isothermal gravitation…
The Quadruply Lensed Supernova SN 2025wny: Implications for LSST
Paul L. Schechter, Michael Zeng Lu, Christopher Hernández
Lensed supernovae (SNae) are among the most eagerly anticipated transients expected from the Legacy Survey of Space and Time (LSST). Quadruply lensed SNae permit more highly constr…
A Forward, Analytic, Differentiable, Geometric (But Inflexible) Lens Model
Paul L. Schechter
We anticipate that hundreds of thousands of distant, strongly gravitationally lensed sources will be detectable with the European Space Agency's (ESA) Euclid mission and the Rubin…
Locating Centers of Clusters of Galaxies with Quadruple Images: Witt's Hyperbola and a New Figure of Merit
Nixon Hanna, Paul L. Schechter, Michael A. McDonald +1
For any elliptical potential with an external parallel shear, Witt has proven that the gravitational center lies on a rectangular hyperbola derived from the image positions of a si…
Basic Elements of Strong Gravitational Lensing
Paul L. Schechter, Jeremy D. Schnittman
Even when used to describe the same phenomenon, equations, graphics and words each give different perspectives and lead to complementary insights. The basic elements of strong grav…
Microlensing near macro-caustics
Luke Weisenbach, Timo Anguita, Jordi Miralda-Escudé +3
Microlensing near macro-caustics is a complex phenomenon in which swarms of micro-images produced by micro-caustics form on both sides of a macro-critical curve. Recent discoveries…
Witt's hyperbola is both predicted and observed to pass close to the lensing galaxies in quadruple quasars
Paul L. Schechter, Richard Luhtaru
When a rectangular hyperbola is constructed from the image positions of a quadruply lensed quasar, as proposed by Witt (1996), it passes very close to the the lensing galaxy. The m…
Microlensing of strongly lensed quasars
G. Vernardos, D. Sluse, D. Pooley +9
Strong gravitational lensing of quasars has the potential to unlock the poorly understood physics of these fascinating objects, as well as serve as a probe of the lensing mass dist…
The missing quasar image in the gravitationally lensed quasar HE02302130: Implications for the cored lens mass distribution and dark satellites
S. Ertl, S. Schuldt, S. H. Suyu +3
Strongly lensed systems with peculiar configurations allow us to probe the local properties of the deflecting lens mass while simultaneously testing general profile assumptions. Th…
A Malmquist-like bias in the inferred areas of diamond caustics and consequences for inferred time delays of gravitationally lensed quasars
Derek Baldwin, Paul L. Schechter
Quasars are quadruply lensed only when they lie within the diamond caustic of a lensing galaxy. This precondition produces a Malmquist-like selection effect in observed populations…
A Strong X-Ray Flux Ratio Anomaly in the Quadruply Lensed Quasar PG 1115+080
David Pooley, Jeffrey A. Blackburne, Saul Rappaport +2
PG 1115+080 is a quadruply lensed quasar at z=1.72 whose image positions are well fit by simple models of the lens galaxy (at z=0.31). At optical wavelengths, the bright close pair…
The Hubble Constant from Gravitational Lens Time Delays
Paul L. Schechter
Present day estimates of the Hubble constant based on Cepheids and on the cosmic microwave background radiation are uncertain by roughly 10% (on the conservative assumption that th…