4 papers
Supermassive black hole seeds from direct collapse of CDM-curvature peaks
Marco Galoppo, Marco Bruni, Tomohiro Harada
We study black hole (BH) formation from the nonlinear growth and collapse of primordial perturbations during the matter-dominated era. Modelling cold dark matter (CDM) as pressurel…
Dark sector interactions in the limit: velocity locking in pure momentum exchange models
Nathan Cruickshank, Robert Crittenden, Kazuya Koyama +1
Models of interacting dark energy (DE) and dark matter (DM) involving pure momentum exchange are a promising avenue for resolving cosmological tensions. However, the behaviour of t…
The frame-dragging vector potential on galaxy scales from Dark-Matter-only Newtonian -body simulations
William Beordo, Marco Bruni, Cristian Barrera-Hinojosa +1
Effects of General Relativity are usually neglected in the non-linear evolution of structures, where Newtonian -body simulations are traditionally employed. In the post-Friedman…
Forecasts for interacting dark energy with time-dependent momentum exchange
Nathan Cruickshank, Robert Crittenden, Kazuya Koyama +1
Models of interacting dark energy and dark matter offer a possible solution to cosmological tensions. In this work, we examine a pure momentum-exchange model with a time-dependent…