192 citations · 567 across the 23 of their papers we have counts for
24 papers
XFit: Global Optimization and Degeneracy Mapping in X-ray Spectral Modeling
Austin MacMaster, Adam Rogers, Jason Fiege +2
The standard approach to modeling X-ray spectral data relies on local optimization methods, such as the Levenberg-Marquardt algorithm. While effective for simple models and speedy…
Bias in apparent dispersion measure due to de-magnification of plasma lensing on background radio sources
Xinzhong Er, Jiangchuan Yu, Adam Rogers +2
The effect of ionized gas on the propagation of radio signals is known as plasma lensing. Unlike gravitational lensing, plasma lensing causes both magnification and strong de-magni…
An Examination of Geometrical and Potential Time Delays in Gravitational Lensing
Oleg Yu. Tsupko, Gennady S. Bisnovatyi-Kogan, Adam Rogers +1
In this paper we investigate the relation between the potential and geometric time delays in gravitational lensing. In the original paper of Shapiro (1964), it is stated that there…
Magnetized Filament Models for Diverging Plasma Lenses
Adam Rogers, Abdul Mohamed, Bailey Preston +2
Spherical plasma lens models are known to suffer from a severe over-pressure problem, with some observations requiring lenses with central pressures up to millions of times in exce…
The effects of plasma lensing on the inferred dispersion measures of Fast Radio Bursts
Xinzhong Er, Yuanpei Yang, Adam Rogers
Radio signals are delayed when propagating through plasma. This type of delay is frequency-dependent and is usually used for estimating the projected number density of electrons al…
Two families of elliptical plasma lenses
Xinzhong Er, Adam Rogers
Plasma lensing is the refraction of low-frequency electromagnetic rays due to free electrons in the interstellar medium. Although the phenomenon has a distinct similarity to gravit…