42 citations · 58 across the 3 of their papers we have counts for
10 papers
Fast simulations of cosmic large-scale structure with massive neutrinos
Christian Partmann, Christian Fidler, Cornelius Rampf +1
Accurate cosmological simulations that include the effect of non-linear matter clustering as well as of massive neutrinos are essential for measuring the neutrino mass scale from u…
CosmicNet I: Physics-driven implementation of neural networks within Boltzmann-Einstein solvers
Jasper Albers, Christian Fidler, Julien Lesgourgues +2
Einstein-Boltzmann Solvers (EBSs) are run on a massive scale by the cosmology community when fitting cosmological models to data. We present a new concept for speeding up such code…
Lensing anomalies from the epoch of reionisation
Christian Fidler, Julien Lesgourgues, Christophe Ringeval
Reionisation blurring is a non-linear correction to the cosmic microwave background that acts similar to weak gravitational lensing and that can be computed from linear perturbatio…
The large-scale general-relativistic correction for Newtonian mocks
Julian Adamek, Christian Fidler
We clarify the subtle issue of finding the correct mapping of Newtonian simulations to light-cone observables at very large distance scales. A faithful general-relativistic interpr…
Relativistic bias in neutrino cosmologies
Christian Fidler, Nils Sujata, Maria Archidiacono
Halos and galaxies are tracers of the underlying dark matter structures. While their bias is well understood in the case of a simple Universe composed dominantly of dark matter, th…
Suitable Initial Conditions for Newtonian Simulations with Massive Neutrinos
Christian Fidler, Alexander Kleinjohann
Initial conditions for cosmological N-body simulations are usually calculated by rescaling the present day linear power spectrum obtained from an Einstein-Boltzmann solver to the i…