175 citations · 1k across the 21 of their papers we have counts for
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Gravitational Lensing By a Massive Object in a Dark Matter Halo. II. Shear, Phase, and Image Geometry
Michal Karamazov, David Heyrovsky
We study the gravitational lensing influence of a massive object in a dark matter halo, using a simple model of a point mass embedded in a spherical Navarro--Frenk--White halo. Bui…
Gravitational Lensing By a Massive Object in a Dark Matter Halo. I. Critical Curves and Caustics
Michal Karamazov, Lukas Timko, David Heyrovsky
We study the gravitational lensing properties of a massive object in a dark matter halo, concentrating on the critical curves and caustics of the combined lens. We model the system…
X-Ray Line Profile Variations during Quasar Microlensing
Lukas Ledvina, David Heyrovsky, Michal Dovciak
Observations of several gravitationally microlensed quasars in X-rays revealed variations in the profile of the iron K line in the course of microlensing events. We explore the…