5 papers
Amortized Simulation-Based Inference of Colliding-Wind Binaries from Short, Noisy Image Time Series
Niklas Knöll, Tobias Buck, Lorenzo Branca +1
Colliding-wind binaries (CWBs), which are systems of two massive stars whose supersonic winds collide into bow shocks, encode rich information about stellar wind properties in thei…
Systematic selection of surrogate models for nonequilibrium chemistry
Robin Janssen, Lorenzo Branca, Tobias Buck
Nonequilibrium chemistry is central to many astrophysical environments but remains a major computational bottleneck in simulations because solving the associated stiff ODE systems…
Carbox: an end-to-end differentiable astrochemical simulation framework
Gijs Vermariën, Tommaso Grassi, Marie Van de Sande +6
Since the first observations of interstellar molecules, astrochemical simulations have been employed to model and understand its formation and destruction path- ways. With the adve…
Ray-trax: Fast, Time-Dependent, and Differentiable Ray Tracing for On-the-fly Radiative Transfer in Turbulent Astrophysical Flows
Lorenzo Branca, Rune Rost, Tobias Buck
Radiative transfer is a key bottleneck in computational astrophysics: it is nonlocal, stiff, and tightly coupled to hydrodynamics. We introduce Ray-trax, a GPU-oriented, fully diff…
Emulating Radiative Transfer in Astrophysical Environments
Rune Rost, Lorenzo Branca, Tobias Buck
Radiative transfer is a fundamental process in astrophysics, essential for both interpreting observations and modeling thermal and dynamical feedback in simulations via ionizing ra…