| |
 |
| Paper: |
Parsec Scale Properties of Radio Sources |
| Volume: |
290, Active Galactic Nuclei: from Central Engine to Host Galaxy |
| Page: |
333 |
| Authors: |
Giovannini, G.; Giroletti, M.; Taylor, G. B. |
| Abstract: |
There are several strong and widely accepted lines of evidences for the existence of relativistic bulk velocities in the parsec scale jets of radio sources. Moreover it became evident recently that relativistic jets are present in high and low power radio sources. Observational results imply similar jet velocities with a Lorentz factor in the range 3 -- 10 for radio galaxies, despite of the variety of their large scale morphology and different total radio power. I will show new VLBI observations of low power radio galaxies to confirm previous results that the nuclear emission at radio waves is largely dominated by relativistc radio jets also in low power radio galaxies, very similar to the situation in more luminous AGNs. A few interesting objects will be presented in detail. At the light of these results I will discuss if the observational differences between high and low power radio galaxies on the large scale could be due to a different interaction of parsec scale radio jets with the ISM in the nuclear regions. |
|
|
|
|
|
