| |
 |
| Paper: |
Intermittent Activity of Jets in AGN |
| Volume: |
427, Accretion and Ejection in AGN: a Global View |
| Page: |
326 |
| Authors: |
Siemiginowska, A.; Czerny, B.; Janiuk, A.; Stawarz, L.; Guainazzi, M.; Celotti, A.; Migliori, G.; Tengstrand, O. |
| Abstract: |
Large scale X-ray jets that extend to >100 kpc distances from the
host galaxy indicate the importance of jets interactions with the
environment on many different physical scales. Morphology of X-ray
clusters indicate that the radio-jet activity of a cD galaxy is
intermittent. This intermittency might be a result of a feedback
and/or interactions between galaxies within the cluster. Here we
consider the radiation pressure instability operating on short
timescales (<105 years) as the origin of the intermittent
behaviour. We test whether this instability can be responsible for
short ages (<104 years) of Compact Symmetric Objects measured by
hot spots propagation velocities in VLBI observations. We model the
accretion disk evolution and constrain model parameters that may
explain the observed compact radio structures and over-abundance of
GPS sources. We also describe effects of consequent outbursts. |
|
|
|
|
|
