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gr-qc2004
Properties of Information Carrying Waves in Cosmology
E. M. O'Shea
Recently we studied the effects of information carrying waves propagating through isotropic cosmologies. By information carrying we mean that the waves have an arbitrary dependence…
gr-qc2004
Metric Perturbation Approach to Gravitational Waves in Isotropic Cosmologies
E. M. O'Shea
Gravitational waves in isotropic cosmologies were recently studied using the gauge-invariant approach of Ellis-Bruni. We now construct the linearised metric perturbations of the ba…
gr-qc2002
Shear-Free Gravitational Waves in an Anisotropic Universe
P. A. Hogan, E. M. O'Shea
We study gravitational waves propagating through an anisotropic Bianchi I dust-filled universe (containing the Einstein-de-Sitter universe as a special case). The waves are modeled…