The Dependence of the Soft X-Ray Spectral Slope with Radio Property Luminosity and Redshift for a Large Sample of Active Galactic Nuclei / AGN from the Einstein IPC Data Base
Abstract
The dependence of the soft X-ray spectral slope on radio, optical and X-ray properties, and on redshift are reported for a large sample of Active Galactic Nuclei (AGN). The sample includes 317 optically and radio-selected AGN from a preliminary version of the Einstein Imaging Proportional Counter (IPC) quasar and AGN data base. The main results are: the difference in X-ray slope between radio-loud and radio-quiet AGN were confirmed for an independent and much larger sample of sources; a difference in X-ray slope between flat and steep radio spectrum AGN is observed only in high luminosity sub-sample; in flat radio spectrum AGNs there is an indication for a dependence of the X-ray spectral index on X-ray luminosity redshift and alpha sub 0x.
- Publication:
-
Two Topics in X-Ray Astronomy, Volume 1: X Ray Binaries. Volume 2: AGN and the X Ray Background
- Pub Date:
- November 1989
- Bibcode:
- 1989ESASP.296..905B
- Keywords:
-
- Active Galactic Nuclei;
- Heao 2;
- Proportional Counters;
- Red Shift;
- X Ray Spectra;
- Background Radiation;
- Imaging Techniques;
- Luminosity;
- Quasars;
- Radio Sources (Astronomy);
- Astronomy