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We use the largest, most uniform, and most spectroscopically complete tofaint X-ray flux limits Chandra sample to date to construct hard 2-8 keVrest-frame X-ray luminosity functions (HXLFs) of spectroscopically identifiedactive galactic nuclei (AGNs) to z~5. In addition, we use a new 2-8 keV localsample selected by the very hard (14-195 keV) SWIFT 9-month Burst AlertTelescope (BAT) survey to construct the local 2-8 keV HXLF. We do maximumlikelihood fits of the combined distant plus local sample (as well as of thedistant sample alone) over the redshift intervals 0<z<1.2, 0<z<3, and 0<z<5using a variety of analytic forms, which we compare with the HXLFs. Werecommend using our luminosity dependent density evolution (LDDE) model fits ofthe combined distant plus local sample over 0<z<3 for all the spectroscopicallyidentified sources and for the broad-line AGNs.

The OPTX Project II: Hard X-ray Luminosity Functions of Active Galactic Nuclei for z<5