Forward emulation to speed up cosmological parameter estimation,
Resources
The writings and videos range from accessible discussions of ideas in the field and notes for students, through to technical working papers.
Easther and group members build visualisations to communicate concepts in physics, astronomy and cosmology.
Much of our research focusses on understanding non-linear processes in the universe, and we have developed tools to simulate these, and for cosmological data analyses.
PyUltraLight v1 – User Notes
PyUltraLight is a Python-based code designed for...
PyUltraLight v1
A pseudo-spectral solver for ultra-light dark matter dynamics.
Richard’s TEDx talk
TEDx talk from the Auckland Aotea Centre, 2014 on dark matter and Christmas trees…
ModeCode
ModeCode provides a numerical solution of the perturbation equations and resulting spectrum for an arbitrary single field inflationary potential. Interfaced with CAMB and CosmoMC, to implement Bayesian parameter estimation for inflation.
PSpectRe
[Easther, Finkel and Roth] A C++ pseudo-spectal code for evolving interacting scalar fields in the early universe.
Image: Detail from PSpectRe simulation of post-inflationary universe.