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

Kyuseok Oh, Michael Koss, Craig B. Markwardt, Kevin Schawinski, Wayne H. Baumgartner, Scott D. Barthelmy, S. Bradley Cenko, Neil Gehrels, Richard Mushotzky, Abigail Petulante, Claudio Ricci, Amy Lien, Benny Trakhtenbrot

Research output: Contribution to journalArticlepeer-review


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 over 90% of the sky and 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 significance level. Adding to the previously known hard X-ray sources, 34% (144/422) of the new detections are identified as Seyfert active galactic nuclei (AGNs) in nearby galaxies (). 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 website.

Original languageEnglish
Article number4
JournalAstrophysical Journal, Supplement Series
Issue number1
StatePublished - Mar 2018
Externally publishedYes


  • X-rays: general
  • catalogs
  • surveys


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