167 citations · 3.6k across the 137 of their papers we have counts for
7 papers · 1 filter
Decaying Dark Energy in Higher-Dimensional Gravity
J. M. Overduin, P. S. Wesson, B. Mashhoon
We use data from observational cosmology to put constraints on higher-dimensional extensions of general relativity in which the effective four-dimensional dark-energy density (or c…
Dynamics of Extended Spinning Masses in a Gravitational Field
Bahram Mashhoon, Dinesh Singh
We develop a first-order approximation method for the influence of spin on the motion of extended spinning test masses in a gravitational field. This approach is illustrated for ap…
Beyond Gravitoelectromagnetism: Critical Speed in Gravitational Motion
Bahram Mashhoon
A null ray approaching a distant astronomical source appears to slow down, while a massive particle speeds up in accordance with Newtonian gravitation. The integration of these app…
A Gravitational Mechanism for the Acceleration of Ultrarelativistic Particles
C. Chicone, B. Mashhoon
Imagine a swarm of free particles near a point P outside a gravitating mass M and a free reference particle at P that is on a radial escape trajectory away from M. Relative to this…
Tidal Acceleration of Ultrarelativistic Particles
C. Chicone, B. Mashhoon
We investigate the motion of free relativistic particles relative to the ambient medium around a gravitationally collapsed system. If the relative speed exceeds a critical value gi…
Tidal Dynamics of Relativistic Flows Near Black Holes
C. Chicone, B. Mashhoon
We point out novel consequences of general relativity involving tidal dynamics of ultrarelativistic relative motion. Specifically, we use the generalized Jacobi equation and its ex…