Constraining Disk-Jet Connection in the Radio Source 4C+74.26
Abstract
We present our results of multi-wavelength analysis of the source 4C+74.26, one of the largest known sources associated with a quasar activity, with an aim to investigate the disk-jet connection in AGNs. While in blazar sources the disk/corona component is outshined by strongly beamed jet emission and in radio galaxies it is typically heavily absorbed by the circumnuclear dust, in this radio-loud AGN we see directly the disk (optical), disk corona and disk outflows (X-rays), and relativistic jet (radio). In addition, all these components are bright enough to be monitored on a regular basis. Therefore, it presents an unique opportunity to explore the disk-jet connection in radio sources. We studied multi-frequency cross-correlation in the source using optical, radio and Swift/BAT long-term observations. The results reveal a significant correlation between the optical and the radio emissions in the sense that optical emission lags behind the radio emission by about 250 days. However, as the Swift/BAT observations were found to be mostly dominated by Poisson noise, they were were binned in a 30-day bin before cross-correlating with optical and radio observations. In addition, spectral analysis of the NuSTAR observations was used to constrain the disk and the coronal properties of the source.
- Publication:
-
The X-ray Universe 2017
- Pub Date:
- October 2017
- Bibcode:
- 2017xru..conf..254B