Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21336106b&link_type=abstract
American Astronomical Society, AAS Meeting #213, #361.06; Bulletin of the American Astronomical Society, Vol. 41, p.511
Astronomy and Astrophysics
Astronomy
Scientific paper
The Swift/BAT Hard X-ray (14-195 keV) Survey provides a complete all-sky catalog of local AGN unbiased by the effects of absorption prevalent at lower energies. Over 20% of the AGN discovered by Swift/BAT had not been identified as AGN before the advent of the Swi ft and Integral hard X-ray surveys. We have compiled publicly available optical spectra of the BAT AGN in the 22-month catalog and have augmented this with our own data in order to obtain optical spectra for over 170 of the 222 Seyfert galaxies in the 22-month BAT AGN catalog. We summarize the optical properties of the BAT AGN, and compare them with the hard X-ray data. We also search for possible Compton-thick AGN using X-ray observations in the 1-10 keV band from Swift/XRT and archival data. We select Compton-thick AGN by searching for large hydrogen columns (log NH > 24.5) and/or strong Fe K lines, and present results on their hard X-ray and optical properties.
Baumgartner Wayne H.
Mushotzky Richard
Tueller Jack
Ueda Yohei
Winter Lars
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