4 papers
Singular Hypersurfaces in Einstein--Gauss--Bonnet Theory of Gravitation
C. Barrabes, P. A. Hogan
We present a general formalism for describing singular hypersurfaces in the Einstein theory of gravitation with a Gauss--Bonnet term. The junction conditions are given in a form wh…
Recoil and Ring--Down Effects in Gravitation
C. Barrabes, P. A. Hogan
We construct a model of a relativistic fireball or light--like shell of matter by considering a spherically symmetric moving gravitating mass experiencing an impulsive deceleration…
Abrupt Changes in the Multipole Moments of a Gravitating Body
C. Barrabès, G. F. Bressange, P. A. Hogan
An example is described in which an asymptotically flat static vacuum Weyl space-time experiences a sudden change across a null hypersurface in the multipole moments of its isolate…
Colliding Plane Waves in Einstein-Maxwell Theory
C. Barrabès, G. F Bressange, P. A. Hogan
Recently a simple solution of the vacuum Einstein-Maxwell field equations was given describing a plane electromagnetic shock wave sharing its wave front with a plane gravitational…