159 citations · 577 across the 10 of their papers we have counts for
10 papers
Poseidon: Efficient Foundation Models for PDEs
Maximilian Herde, Bogdan Raonić, Tobias Rohner +4
We introduce Poseidon, a foundation model for learning the solution operators of PDEs. It is based on a multiscale operator transformer, with time-conditioned layer norms that enab…
Well-balanced finite volume schemes for nearly steady adiabatic flows
Luc Grosheintz-Laval, Roger Käppeli
We present well-balanced finite volume schemes designed to approximate the Euler equations with gravitation. They are based on a novel local steady state reconstruction. The scheme…
High-order well-balanced finite volume schemes for the Euler equations with gravitation
Luc Grosheintz, Roger Käppeli
A high-order well-balanced scheme for the Euler equations with gravitation is presented. The scheme is able to preserve a spatially high-order accurate discrete representation of a…
An advanced leakage scheme for neutrino treatment in astrophysical simulations
Albino Perego, Ruben Cabezón, Roger Käppeli
We present an Advanced Spectral Leakage (ASL) scheme to model neutrinos in the context of core-collapse supernovae and compact binary mergers. Based on previous gray leakage scheme…
Construction of approximate entropy measure valued solutions for hyperbolic systems of conservation laws
Ulrik S. Fjordholm, Roger Käppeli, Siddhartha Mishra +1
Entropy solutions have been widely accepted as the suitable solution framework for systems of conservation laws in several space dimensions. However, recent results in \cite{CDL1,C…
Nucleosynthesis in core-collapse supernova explosions triggered by a quark-hadron phase transition
Nobuya Nishimura, Tobias Fischer, Friedrich-Karl Thielemann +7
We explore heavy element nucleosynthesis in the explosion of massive stars which are triggered by a quark-hadron phase transition during the early post bounce phase of core-collaps…
Core-collapse supernova explosions triggered by a quark-hadron phase transition during the early post-bounce phase
T. Fischer, I. Sagert, G. Pagliara +7
We explore explosions of massive stars, which are triggered via the quark-hadron phase transition during the early post bounce phase of core-collapse supernovae. We construct a qua…
The influence of model parameters on the prediction of gravitational wave signals from stellar core collapse
S. Scheidegger, R. Kaeppeli, S. C. Whitehouse +2
We present the gravitational wave (GW) analysis of an extensive series of 3D MHD core-collapse simulations. Our 25 models are launched from a 15 solar mass progenitor, a sphericall…
Gravitational waves from supernova matter
S. Scheidegger, S. C. Whitehouse, R. Kaeppeli +1
We have performed a set of 11 three-dimensional magnetohydrodynamical core collapse supernova simulations in order to investigate the dependencies of the gravitational wave signal…
FISH: A 3D parallel MHD code for astrophysical applications
R. Kaeppeli, S. C. Whitehouse, S. Scheidegger +2
FISH is a fast and simple ideal magneto-hydrodynamics code that scales to ~10 000 processes for a Cartesian computational domain of ~1000^3 cells. The simplicity of FISH has been a…