BAT AGN Spectroscopic Survey: XVI. General Physical Characteristics of BAT Blazars

Abstract

The recently released 105-month {\it Swift}-Burst Alert Telescope (BAT) all-sky hard X-ray survey catalog presents an opportunity to study astrophysical objects detected in the deepest look at the entire hard X-ray (14$-$195 keV) sky. Here we report the results of a multifrequency study of 146 blazars from this catalog, quadrupling the number compared to past studies, by utilizing recent data from the {\it Fermi}-Large Area Telescope (LAT), Swift-BAT, and archival measurements. In our ${\hat{I}}^3$-ray analysis of $\sim$10 years of the LAT data, 101 are found as ${\hat{I}}^3$-ray emitters, whereas, 45 remains LAT undetected. We model the broadband spectral energy distributions with a synchrotron-inverse Compton radiative model. On average, BAT detected sources host massive black holes ($M_{\mathrm{bh}}\sim 10^9$ M${}_{\odot }$) and luminous accretion disks ($L_{\mathrm{d}}\sim 10^{46}$ erg s${}^{-1}$). At high-redshifts ($z>2$), BAT blazars host more powerful jets with luminous accretion disks compared to those detected only with the {\it Fermi}-LAT. We find good agreement in the black hole masses derived from the single-epoch optical spectroscopic measurements and standard accretion disk modeling approaches. Other physical properties of BAT blazars are similar to those known for {\it Fermi}-LAT detected objects.

16 pages, 7 figures, 6 tables, to appear in the Astrophysical Journal. Full data tables and SED plots are included in the arXiv uploaded files