The Palermo Swift-BAT Hard X-ray Catalogue. II- Results after 39 months of sky survey

Understand

We present the Palermo Swift-BAT hard X-ray catalogue obtained from the analysis of the the data relative to the first 39 months of the Swift mission.

• We have developed a dedicated software to perform data reduction, mosaicking and source detection on the BAT survey data.
• We analyzed the BAT dataset in three energy bands (14-150 keV, 14-30 keV, 14-70 keV), obtaining a list of 962 detections above a significance threshold of 4.8 standard deviations.
• The identification of the source counterparts was pursued using three strategies: cross-correlation with published hard X-ray catalogues, analysis of field observations of soft X-ray instruments, cross-correlation with the SIMBAD databases.