Summary

• BXA: a MultiNest plugin for xspec/sherpa
• BXA: parameter estimation
• Robust to multiple solutions, convergence issues, etc.
• BXA: Bayesian model comparison
• Sensitive; can be interpreted; calibrated to FDR
• Population inference
• Understand the population from a limited sample
• Forward-fold all uncertainties
• more in: Buchner+14, +15, +17a + their refs