2 papers
astro-ph.IM2026
When a neural surrogate cannot accelerate a solver: runtime share, closed-loop drift, and the economics of uncertainty gating in a stiff coupled simulation
L. Thümmler, T. Kuroda
Learned surrogates for expensive inner solver blocks are a widely pursued route to faster multiphysics simulation. We report a controlled, end-to-end negative result and identify t…
astro-ph.HE2026
Nucleosynthesis in the Accretion-induced Collapse of magnetised, Rotating White Dwarfs
Laurenz Thümmler, Takami Kuroda, Masaru Shibata
Accretion-induced collapse (AIC) of a rotating oxygen-neon-magnesium white dwarf (WD) is an alternative channel of neutron-star formation, in which a mass-accreting star near the C…