5 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…