THE OPTX PROJECT. II. HARD X-RAY LUMINOSITY FUNCTIONS OF ACTIVE GALACTIC NUCLEI FOR<i>z</i>≲ 5

Abstract

We use the largest, most uniform, and most spectroscopically complete to\nfaint X-ray flux limits Chandra sample to date to construct hard 2-8 keV\nrest-frame X-ray luminosity functions (HXLFs) of spectroscopically identified\nactive galactic nuclei (AGNs) to z~5. In addition, we use a new 2-8 keV local\nsample selected by the very hard (14-195 keV) SWIFT 9-month Burst Alert\nTelescope (BAT) survey to construct the local 2-8 keV HXLF. We do maximum\nlikelihood fits of the combined distant plus local sample (as well as of the\ndistant sample alone) over the redshift intervals 0&lt;z&lt;1.2, 0&lt;z&lt;3, and 0&lt;z&lt;5\nusing a variety of analytic forms, which we compare with the HXLFs. We\nrecommend using our luminosity dependent density evolution (LDDE) model fits of\nthe combined distant plus local sample over 0&lt;z&lt;3 for all the spectroscopically\nidentified sources and for the broad-line AGNs.\n