286 citations · 444 across the 16 of their papers we have counts for
13 papers · 1 filter
Wave Fronts in a Causality Violating Godel-Type Metric
Thomas P. Kling, Faizuddin Ahmed, Megan Lalumiere
The light-rays and wave fronts in a flat class of Godel-type metric are examined to reveal the causality violating features of the space-time. Non-causal features demonstrated by t…
Examining the Kerr Metric through Wave Fronts of Null Geodesics
Thomas Kling, Eric Grotzke, Kevin Roebuck +1
We examine the singularities of the wave fronts of null geodesics from point sources in the Kerr Metric. We find that the wave fronts develop a tube like structure that collapses n…
Null Geodesics and Wave Front Singularities in the Godel Space-time
Thomas Kling, Kevin Roebuck, Eric Grotzke
We explore wave fronts of null geodesics in the Godel metric emitted from point sources both at, and away from, the origin. For constant time wave fronts emitted by sources away fr…
Angular diameter distances reconsidered in the Newman and Penrose formalism
Thomas P. Kling, Aly Aly
Using the Newman and Penrose spin coefficient (NP) formalism, we provide a derivation of the Dyer-Roeder equation for the angular diameter distance in cosmological space-times. We…
Continuous image distortion by astrophysical thick lenses
Thomas P. Kling, Louis Bianchini
Image distortion due to weak gravitational lensing is examined using a non-perturbative method of integrating the geodesic deviation and optical scalar equations along the null geo…
The Bianchi identity and weak gravitational lensing
Thomas P. Kling, Brian Keith
We consider the Bianchi identity as a field equation for the distortion of the shapes of images produced by weak gravitational lensing. Using the spin coefficient formalism of Newm…