Conveners
Wednesday afternoon: AGN feedback
- Hsiang-Yi Karen Yang (National Tsing Hua University)
Chandra observations of radio galaxies hosted by the central galaxy of a group or cluster continue to provide insights into the makeup of jets and lobes and their interactions with the environment. My main focus will be implications of the rich X-ray and radio structure observed in Cygnus A. Among other things, I will argue that the feature known as the X-ray jet in Cygnus A is formed by...
Our understanding of how active galactic nucleus feedback operates in galaxy clusters has improved in recent years owing to large efforts in multiwavelength observations and hydrodynamical simulations. However, it is much less clear how feedback operates in galaxy groups, which have shallower gravitational potentials.
We present recent observational work using a combination of eROSITA and...
Energetic feedback from active galactic nuclei (AGNs) is often invoked to explain the thermal properties of galaxy groups and clusters, and to resolve several outstanding issues in galaxy formation, but its impact is still not fully understood. AGN feedback may have been gradual, occurring mostly during periods of lower accretion rates, as observed in cool core clusters today, or it may have...
As they penetrate tens to hundreds of kpc through ICMs, AGN jets and their
back-flows often can highlight distinct ICM structures encountered along the
way. Those ICM structures frequently represent important, "tell-tale"
signatures of that cluster's environment and dynamical history, so of its
formation and evolution. Consequently, characterizing such AGN distortions
and, especially the...
I shall discuss the gradient technique that has recently been applied to the galaxy clusters in order to obtain the properties of the magnetic field there. I shall also discuss how magnetic field affect the thermal conductivity and CR transport/acceleration in galaxy clusters.
