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

## TL;DR

This study analyzes 146 blazars from the Swift-BAT survey using multiwavelength data, revealing their physical characteristics, gamma-ray emission properties, and jet power, and comparing them with Fermi-LAT detected blazars.

## Contribution

It provides the largest multiwavelength characterization of BAT blazars to date, including gamma-ray detection analysis and physical parameter estimation, expanding understanding of their properties.

## Key findings

- 101 blazars are gamma-ray emitters based on LAT data.
- BAT blazars host massive black holes (~10^9 M_sun) and luminous accretion disks.
- High-redshift BAT blazars have more powerful jets and luminous disks.

## 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 $\gamma$-ray analysis of $\sim$10 years of the LAT data, 101 are found as $\gamma$-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 ($M_{\rm bh}\sim10^9$ M$_{\odot}$) and luminous accretion disks ($L_{\rm d}\sim10^{46}$ 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.