• A Gravitational Mechanism for the Acceleration of Ultrarelativistic Particles 

    Chicone, Carmen Charles; Mashhoon, Bahram (arXiv, 2005-03)
    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 reference particle and in a Fermi normal ...
  • Gravitomagnetic Accelerators 

    Chicone, Carmen Charles; Mashhoon, Bahram (arXiv, 2010-05)
    We study a simple class of time-dependent rotating Ricci-flat cylindrically symmetric spacetime manifolds whose geodesics admit gravitomagnetic jets. The helical paths of free test particles in these jets up and down ...
  • Gravitomagnetic Jets 

    Chicone, Carmen Charles; Mashhoon, Bahram (arXiv, 2010-08)
    We present a family of dynamic rotating cylindrically symmetric Ricci-flat gravitational fields whose geodesic motions have the structure of gravitomagnetic jets. These correspond to helical motions of free test particles ...
  • Ultrarelativistic motion: inertial and tidal effects in Fermi coordinates 

    Chicone, Carmen Charles; Mashhoon, Bahram (Institute of Physics, 2004-12)
    Fermi coordinates are the natural generalization of inertial Cartesian coordinates to accelerated systems and gravitational fields. We study themotion of ultrarelativistic particles and light rays in Fermi coordinates ...