Conclusions

• Knowing correct counterpart for X-ray sources is crucial for galaxy-AGN co-evolution, BH physics and stellar evolution studies
• NWAY is a better way!
• ‣ algorithm based on Bayesian statistics
• ‣ can process simultaneously N catalogues
• ‣ not limited to use of magnitude
• ‣ can ingest any kind of prior (ideally entire SED)