8 citations · 10 across the 4 of their papers we have counts for
4 papers
Interacting dark energy axions in light of the Hubble tension
Ennis Mawas, Lauren Street, Richard Gass +1
A current problem within the ΛCDM framework is the tension between late and early time measurements of the Hubble parameter today, H0. We entertain the possibility that dark energy…
An Optical Analog of a Black Holes
Andrew Royston, Richard Gass
Using media with extremely low group velocities one can create an optical analog of a curved space-time. Leonhardt and Piwnicki have proposed that a vortex flow will act as an opti…
Detecting Event Horizons and Stationary Surfaces
Richard G. Gass, F. Paul Esposito, L. C. R. Wijewardhana +1
We have investigated the behavior of three curvature invariants for Schwarzschild, Reissner-Nordstrøm, Kerr, and Kerr-Newman black holes. We have also studied these invariants for…
Do Black Holes Form?
Richard Gass, Louis Witten
We argue that the collapse of a non-rotating object into a black hole has not been proved to be dynamically stable. There are unstable modes and one should explore whether they may…