5 citations · 15 across the 5 of their papers we have counts for
5 papers
Analytic and numerical solutions to the seismic wave equation in continuous media
S. J. Walters, L. K. Forbes, A. M. Reading
This paper presents two approaches to mathematical modelling of a synthetic seismic pulse, and a comparison between them. First, a new analytical model is developed in two-dimensio…
A Simple and Practical Algorithm for Accurate Gravitational Magnification Maps
S. J. Walters, L. K. Forbes
In this brief communication a new method is outlined for modelling magnification patterns on an observer's plane using a first order approximation to the null geodesic path equatio…
A Note on the Overall Magnification of a Gravitational Point-Source-Point-Lens System
S. J. Walters, L. K. Forbes
The total magnification due to a point lens has been of particular interest as the theorem that gravitational lensing results in light amplification for all observers appears to co…
Rotating gravitational lenses: a kinematic approach
Steve Walters, Larry Forbes
This paper uses the Kerr geodesic equations for massless particles to derive an acceleration vector in both Boyer-Lindquist and Cartesian coordinates. As a special case, the Schwar…
A kinematical approach to gravitational lensing using new formulae for refractive index and acceleration
S. J. Walters, L. K. Forbes, P. D. Jarvis
This paper uses the Schwarzschild metric to derive an effective refractive index and acceleration vector that account for relativistic deflection of light rays, in an otherwise cla…