The 3C Extragalactic Radio Sky: Legacy of the Third Cambridge Catalogue

Session

Radio-loud active galaxies and their environments: feedback mechanisms - intracluster medium - mergers, shocks and cavities - role of BCGs - non-thermal processes

17 Sept 2019, 09:00

Aula Darwin (Torino - Italy)

83. The case for AGN feedback in clusters of galaxies

Prof. Julie Hlavacek-Larrondo

17/09/2019, 09:00

Clusters of galaxies are fantastic laboratories for understanding the physics of AGN feedback. They play a pivotal role in our understanding of jet-mode feedback by demonstrating that AGN-driven jets can inject profound amounts of energy into their surroundings via shock fronts, sound waves and turbulence, in addition to driving powerful molecular outflows and metals out of galaxies. In this...

39. A multi-scale low radio frequency view of the Perseus cluster

Marie-Lou Gendron-Marsolais (European Southern Observatory)

17/09/2019, 09:30

Among the most notorious sources belonging to the Third Cambridge Catalogue is 3C84, active galactic nuclei of NGC 1275, the Perseus cluster’s brightest galaxy. It is the origin of a complex interaction between radio jets and the cluster’s environment, releasing relativistic particles on large distances. On the other hand, the hierarchical merging of subclusters and groups, from which cluster...

77. NuSTAR observations of 3C84 in the Perseus Cluster

Grzegorz Madejski (SLAC)

17/09/2019, 09:50

This presentation will cover the broad-band observations of one of the 3C sources, namely the radio galaxy 3C84 (a.k.a. NGC1275), which is the central dominant galaxy in the Perseus Cluster. The AGN contains a radio-emitting jet, and is believed to play an important role in providing the feedback to the cluster by energizing large-scale "bubbles" of radio-emitting plasma. In particular, we...

12. The Slow Heartbeat of Supermassive Black Hole Fuelling

Alastair Edge (Durham University)

17/09/2019, 10:10

I will review the observed variability of the low accretion
rate AGN in Brightest Cluster Galaxies (BCGs). Radio/sub-mm
monitoring of a sample of several dozen systems over the past decade
shows most systems have varied by >30% and many by factors of >2.
The implications of this variability, particularly in the sub-mm,
will be discussed.

101. Galaxy clusters at low radio frequencies

Prof. Reinout Van Weeren

17/09/2019, 11:00

talk

26. Is AGN activity necessary to power diffuse emission in galaxy clusters?

Chiara Stuardi (Universita' di Bologna)

17/09/2019, 11:30

The presence of relativistic particles and diffuse magnetic field in cluster volumes is unveiled
by the observation of synchrotron radio emission extended on Mpc scales in the form of radio
relics and halos. Their origin is connected with merger processes, but the underlying particle acceleration mechanisms are still debated. A possible scenario calls upon the presence of a fossil population...

29. Stormy weather in 3C 196.1: Nuclear Outbursts and Merger Events Shape the Environment of the Hybrid Radio Galaxy 3C 196.1

Dr Federica Ricci

17/09/2019, 11:50

Active galactic nuclei (AGN) feedback have a dramatic impact on cosmic structure formation and evolution, producing the so-called 'cosmic downsizing', the BH-host scaling relations and the quenching of cooling-flows in cluster cores. In particular, radio-loud AGN are expected to experience the most intense galaxy-scale outflows and feedback in the centre of massive galaxies, with...