Swift-BAT 105-Month All-Sky Hard X-Ray Source Catalog

NASA's Swift-BAT 105-month survey catalog contains 1,632 hard X-ray sources detected across the entire sky in the 14-195 keV energy band. The catalog includes 422 new detections, with 144 identified as Seyfert active galactic nuclei, and provides eight-channel spectra and monthly light curves for each object. Data reduction and analysis followed procedures from the previous 70-month survey, covering observations from December 2004 to August 2013.

Use Cases

• Classifying hard X-ray source types based on detected source identifications like Seyfert AGNs and X-ray binaries.
• Analyzing long-term variability of celestial objects using the provided monthly sampled light curves.
• Studying the spectral properties of hard X-ray sources across eight energy channels.
• Cross-matching new detections with soft X-ray data from instruments like Swift-XRT and Chandra for multi-wavelength analysis.

Strengths

• Contains 1,632 hard X-ray sources with a uniform sensitivity of 8.40x10^-12 erg/s/cm^2 over 90% of the sky.
• Includes 422 new detections, with 320 reported as hard X-ray sources for the first time.
• Provides eight-channel spectra and monthly sampled light curves for each of the 1,632 cataloged objects.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-03-13 16:37:00.433071; freshness should be verified.

Provenance

Source

National Aeronautics and Space Administration (NASA) HEASARC, based on CDS Catalog J/ApJS/235/4.

Collection Method

Observations from the Burst Alert Telescope (BAT) coded-mask imager on board the Swift observatory, processed following procedures from the 70-month survey.

Time Range

December 2004 to August 2013.

Freshness

Catalog generated from observations between 2004-12 and 2013-08; metadata last updated 2026-03-13.

Geography

All-sky survey.