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arXiv · 2504.08081

JAX-bandflux: differentiable supernovae SALT modelling for cosmological analysis on GPUs

Samuel Alan Kossoff Leeney
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Abstract

JAX-bandflux is a JAX implementation of critical supernova modelling functionality for cosmological analysis. The codebase implements key components of the established library SNCosmo in a differentiable framework, offering efficient parallelisation and gradient-based optimisation capabilities through GPU acceleration. The package facilitates differentiable computation of supernova light curve measurements, supporting the inference of SALT parameters necessary for cosmological analysis.

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Samuel Alan Kossoff Leeney. 2025-04-10. JAX-bandflux: differentiable supernovae SALT modelling for cosmological analysis on GPUs. https://arxiv.org/abs/2504.08081

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