Astronomers identify 17 unidentified Fermi gamma-ray sources with hard X-ray counterparts from Swift-BAT and ART-XC and classify 15 as known objects including blazars, Seyfert galaxies, and X-ray binaries.
Note that UFO 4FGL J1616.6-5009 has two overlapping 4PBC source, namely 4PBC J1616.7-4959 and 4PBC J1617.4-5019
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Hard X-ray Sources in Fermi UFOs
Astronomers identify 17 unidentified Fermi gamma-ray sources with hard X-ray counterparts from Swift-BAT and ART-XC and classify 15 as known objects including blazars, Seyfert galaxies, and X-ray binaries.