Generation of gravitational waves in vacuum FRW models

Details Generation of gravitational waves in vacuum FRW models Generation of gravitational waves in vacuum FRW models

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cqgra...3.1235i&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 3, Nov. 1, 1986, p. 1235-1245. Research supported by the Universidad Autono

Astronomy and Astrophysics

Astronomy

2

Cosmology, Einstein Equations, Gravitational Waves, Milne Method, Solitary Waves, Vacuum, Astronomical Models, Asymptotic Properties, Riemann Manifold

Scientific paper

The paper presents a soliton solution of Einstein's equations which evolves in time towards a Milne universe containing gravitational waves. These waves have cylindrical symmetry and start as gravitational radiation at initial null hypersurfaces, go through a particle-like stage at some finite time and, finally, evolve towards gravitational radiation with decreasing amplitude at future null infinity. In these final stages the solution resembles the final stages of an open Friedman-Robertson-Walker model with gravitational waves. This metric can be extended through the initial null hypersurfaces. The extended metric represents two incoming gravitational waves from past null infinity which are colliding without a singularity.

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