The 105-Month Swift-BAT All-sky Hard X-Ray Survey

Abstract

We present a catalog of hard X-ray sources detected in the first 105 months of observations with the Burst Alert Telescope (BAT) coded mask imager on board the Swift observatory.The 105 month Swift -BAT survey is a uniform hard X-ray all-sky survey with a sensitivity of 8.40×10 -12 erg s -1 cm -2 over 90% of the sky and 7.24 × 10 -12 erg s -1 cm -2 over 50% of the sky in the 14 -195 keV band.The Swift -BAT 105 month catalog provides 1632 (422 new detections) hard X-ray sources in the 14 -195 keV band above the 4.8σ significance level.Adding to the previously known hard X-ray sources, 34% (144/422) of the new detections are identified as Seyfert AGN in nearby galaxies (z < 0.2).The majority of the remaining identified sources are X-ray binaries (7%, 31) and blazars/BL Lac objects (10%, 43).As part of this new edition of the Swift -BAT catalog, we release eight-channel spectra and monthly sampled light curves for each object in the online journal and at the Swift -BAT 105 month Web site.