Now showing items 1-10 of 13
Generating static spherically symmetric black-holes in lovelock gravity
Generalization of a known theorem to generate static, spherically symmetric black-hole solutions in higher dimensional Lovelock gravity is presented. Particular limits, such as Gauss-Bonnet (GB) and/or Einstein-Hilbert ...
Restricted class of colliding Einstein-Yang-Mills plane waves
By gauging an Abelian electromagnetic (em) solution through a non-Abelian transformation and in accordance with a theorem proved long time ago, we construct a simple class of colliding Einstein-Yang-Mills (EYM) plane ...
The effect of sources on the inner horizon of black holes
(APS Physics, 2001)
Single pulse of null dust and colliding null dusts both transform a regular horizon into a space-like singularity in the space of colliding waves. The local isometry between such space-times and black holes extrapolates ...
Reflection of electromagnetic waves from mixtures of plane gravitational and scalar waves
(APS Physics, 2006)
We consider colliding wave packets consisting of hybrid mixtures of electromagnetic, gravitational and scalar waves. Irrespective of the scalar field, the electromagnetic wave still reflects from the gravitational wave. ...
Effect of NUT parameter on the analytic extension of the Cauchy horizon that develop in colliding wave spacetimes
The Cauchy horizon forming colliding wave solution due to Chandrasekhar and Xanthopoulos (CX) has been generalized by inclusion of the NUT ( Newman - Unti - Tamburino) parameter. This is done by transforming the part of ...
Failure of a stability conjecture in general relativity
By employing an exact back-reaction geometry, Helliwell-Konkowski stability conjecture is shown to fail. This happens when a test null dust is inserted to the interaction region of cross-polarized Bell-Szekeres spacetime.
Null singularities in colliding waves
(Cornell University, 2001)
Colliding Einstein - Maxwell - Scalar fields need not necessarily doomed to become in a spacelike singularity. Examples are given in which null singularities emerge as intermediate stages between a spacelike singularity ...
Null singularity formation by scalar fields in colliding waves and black holes
(Cornell University, 2002)
It was believed that when gravitational, electromagnetic and scalar waves interact, a spacelike curvature singularity or Cauchy horizon develops because of mutual focusing. We show with an exact solution that the collision ...
Search for gravitational waves through the electromagnetic faraday rotation
(APS Physics, 2007)
A method is given which renders indirect detection of strong gravitational waves possible. This is based on the reflection (collision) of a linearly polarized electromagnetic shock wave from (with) a cross polarized ...
Horizon instability in the cross polarized Bell - Szekeres spacetime
(Cornell University, 2000)
The quasiregular singularities (horizons) that form in the collision of cross polarized electromagnetic waves are, as in the linear polarized case, unstable. The validity of the Helliwell-Konkowski stability conjecture ...