Bayesian X-ray Analysis (BXA) v4.0

Buchner, Johannes

doi:0.21105/joss.03045

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Bayesian X-ray Analysis (BXA) v4.0

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Buchner, Johannes
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Citation

Buchner, J. (2021). Bayesian X-ray Analysis (BXA) v4.0. The Journal of Open Source Software, 6(61). doi:0.21105/joss.03045.

Cite as: https://hdl.handle.net/21.11116/0000-000A-4B7A-A

Abstract

BXA connects the X-ray spectral analysis environments Xspec (Arnaud, 1996) and Sherpa
(Freeman et al., 2001) with modern Bayesian inference algorithms based on nested sampling.
This allows estimation of parameter probability distributions and model comparison with Bayes
factors. Because BXA is a plug-in, users can build and fit the full range of models available in
Xspec and Sherpa. BXA also comes with convenience functionality for backgrounds of many
X-ray missions, which allow extracting more information from low-count data.