NWAY – multi-catalog association

• Based on solid Bayesian statistics
• Can process simultaneously N catalogs
• Handles absent sources
• Handles ambiguous cases
• Can ingest prior information
• magnitude, color (SED information), or other
• Fast and automatic

In collaboration with Mara Salvato, K. Nandra (MPE)

Preparation for eROSITA follow-up (Tom Dwelly)