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A Quasi-Static Approach to Structure Formation in Black Hole Universes
Jessie Durk, Timothy Clifton
Motivated by the existence of hierarchies of structure in the Universe, we present four new families of exact initial data for inhomogeneous cosmological models at their maximum of…
Perturbation theory for cosmologies with non-linear structure
Sophia R. Goldberg, Christopher Gallagher, Timothy Clifton
The next generation of cosmological surveys will operate over unprecedented scales, and will therefore provide exciting new opportunities for testing general relativity. The standa…
Cosmological Solutions with Charged Black Holes
Rashida Bibi, Timothy Clifton, Jessie Durk
We consider the problem of constructing cosmological solutions of the Einstein-Maxwell equations that contain multiple charged black holes. By considering the field equations as a…
Ray tracing and Hubble diagrams in post-Newtonian cosmology
Viraj A. A. Sanghai, Pierre Fleury, Timothy Clifton
On small scales the observable Universe is highly inhomogeneous, with galaxies and clusters forming a complex web of voids and filaments. The optical properties of such configurati…
Black holes as echoes of previous cosmic cycles
Bernard Carr, Timothy Clifton, Alan Coley
The existence of exact solutions which represent a lattice of black holes at a scalar-field-dominated cosmological bounce suggests that black holes could persist through successive…
Persistent Black Holes in Bouncing Cosmologies
Timothy Clifton, Bernard Carr, Alan Coley
In this paper we explore the idea that black holes can persist in a universe that collapses to a big crunch and then bounces into a new phase of expansion. We use a scalar field to…