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Constraints on the mass-profile of the lens galaxy G2237+0305
J. S. B. Wyithe, E. Agol, E. L. Turner +1
Published parametric models of the Einstein Cross gravitational lens demonstrate that the image geometry can be reproduced by families of models. In particular, the slope of the ma…
The size of a quasar's mid-IR emission region inferred from microlensed images of Q2237+0305
J. S. B. Wyithe, E. Agol, C. J. Fluke
We use published mid-IR and V-band flux ratios for images A and B of Q2237+0305 to demonstrate that the size of the mid-IR emission region has a scale comparable to or larger than…
On the Probability Distribution of Cosmological Microlensing Optical Depths
J. S. B. Wyithe, E. L. Turner
It is conventional to calculate the probability of microlensing for a cosmologically distant source based on the Press-Gunn approximation that the lensing objects are uniformly and…
Photometric Solutions for Detached Eclipsing Binaries: selection of ideal distance indicators in the SMC
J. S. B. Wyithe, R. E. Wilson
Detached eclipsing binary stars provide a robust one-step distance determination to nearby galaxies. As a by-product of Galactic microlensing searches, catalogs of thousands of var…