4 papers
Quasilocal Newtonian limit of general relativity and galactic dynamics
Marco Galoppo, Federico Re, David L. Wiltshire
We present a new self-consistent perturbative expansion for realistic isolated differentially rotating systems -- disc galaxies. At leading order it is formally equivalent to Ehler…
Exact solutions for differentially rotating galaxies in general relativity
Marco Galoppo, David L. Wiltshire
Two classes of stationary axisymmetric solutions of Einstein's equations for isolated differentially rotating matter sources are presented. The asymptotic regime is extracted, with…
Supernovae evidence for foundational change to cosmological models
Antonia Seifert, Zachary G. Lane, Marco Galoppo +2
We present a new, cosmologically model-independent, statistical analysis of the Pantheon+ type Ia supernovae spectroscopic dataset, improving a standard methodology adopted by Lane…
First investigation of void statistics in numerical relativity simulations
Michael J. Williams, Hayley J. Macpherson, David L. Wiltshire +1
We apply and extend standard tools for void statistics to cosmological simulations that solve Einstein's equations with numerical relativity (NR). We obtain a simulated void catalo…