Swift: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications (2024)
Journal Article
Schaller, M., Borrow, J., Draper, P. W., Ivkovic, M., McAlpine, S., Vandenbroucke, B., …Xiang, Z. (2024). Swift: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications. Monthly Notices of the Royal Astronomical Society, https://doi.org/10.1093/mnras/stae922

Numerical simulations have become one of the key tools used by theorists in all the fields of astrophysics and cosmology. The development of modern tools that target the largest existing computing systems and exploit state-of-the-art numerical method... Read More about Swift: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications.

Persistent topology of the reionization bubble network – II. Evolution and classification (2023)
Journal Article
Elbers, W., & van de Weygaert, R. (2023). Persistent topology of the reionization bubble network – II. Evolution and classification. Monthly Notices of the Royal Astronomical Society, 520(2), 2709-2726. https://doi.org/10.1093/mnras/stad120

We study the topology of the network of ionized and neutral regions that characterized the intergalactic medium during the Epoch of Reionization. Our analysis uses the formalism of persistent homology, which offers a highly intuitive and comprehensiv... Read More about Persistent topology of the reionization bubble network – II. Evolution and classification.

Geodesic motion and phase-space evolution of massive neutrinos (2022)
Journal Article
Elbers, W. (2022). Geodesic motion and phase-space evolution of massive neutrinos. Journal of Cosmology and Astroparticle Physics, 2022(11), Article 058. https://doi.org/10.1088/1475-7516/2022/11/058

The non-trivial phase-space distribution of relic neutrinos is responsible for the erasure of primordial density perturbations on small scales, which is one of the main cosmological signatures of neutrino mass. In this paper, we present a new code,fa... Read More about Geodesic motion and phase-space evolution of massive neutrinos.

Higher order initial conditions with massive neutrinos (2022)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., & Pascoli, S. (2022). Higher order initial conditions with massive neutrinos. Monthly Notices of the Royal Astronomical Society, 516(3), https://doi.org/10.1093/mnras/stac2365

The discovery that neutrinos have mass has important consequences for cosmology. The main effect of massive neutrinos is to suppress the growth of cosmic structure on small scales. Such growth can be accurately modelled using cosmological N-body simu... Read More about Higher order initial conditions with massive neutrinos.

An optimal non-linear method for simulating relic neutrinos (2021)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., & Pascoli, S. (2021). An optimal non-linear method for simulating relic neutrinos. Monthly Notices of the Royal Astronomical Society, 507(2), 2614-2631. https://doi.org/10.1093/mnras/stab2260

Cosmology places the strongest current limits on the sum of neutrino masses. Future observations will further improve the sensitivity and this will require accurate cosmological simulations to quantify possible systematic uncertainties and to make pr... Read More about An optimal non-linear method for simulating relic neutrinos.