General Physical Properties of Gamma-Ray-emitting Radio Galaxies
Abstract
We study the radio galaxies with known redshifts detected by the Fermi satellite after 10 yr of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous multiwavelength data of these radio galaxies and study the distributions of the derived physical parameters as a function of black hole mass and accretion disk luminosity. The main results are as follows. (1) We find that the jet kinetic power of most radio galaxies can be explained by the hybrid jet model based on ADAFs surrounding Kerr black holes. (2) After excluding the redshift, there is a significant correlation between the radiation jet power and the accretion disk luminosity, while the jet kinetic power is weakly correlated with the accretion disk luminosity. (3) We also find a significant correlation between inverse Compton luminosity and synchrotron luminosity. The slope of the correlation for radio galaxies is consistent with the synchrotron self-Compton (SSC) process. The result may suggest that the high-energy components of radio galaxies are dominated by the SSC process.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- April 2023
- DOI:
- arXiv:
- arXiv:2304.05551
- Bibcode:
- 2023ApJS..265...60C
- Keywords:
-
- Active galactic nuclei;
- Gamma-rays;
- Gamma-ray sources;
- Radio galaxies;
- Galaxy jets;
- 16;
- 637;
- 633;
- 1343;
- 601;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 9 pages,7 figures, accept for publication in ApJS