1 INTRODUCTION

2 SOURCE DETECTION

2.1 Likelihood ratio test for existence of a source

2.2 Iterative calculation of the likelihood map

2.3 Detection thresholds in terms of $\Delta\ln{\cal L}$

2.4 Additional information from source spectra and grades

2.5 Source parameter uncertainties

3 ART-XC SPECIFIC ISSUES

3.1 Illumination from bright sources

3.2 Background model

4 SUMMARY AND CONCLUSIONS