Supermassive Black Holes and accretion:

    Methods to measure BH mass and spin

    Images from the event horizon telescope

    Hot vs cold accretion, radiatively efficient vs inefficient flows

Jets and outflows (high angular resolution radio observations)

    Space VLBI (Radioastron) imaging of the transverse structure

    Counterjet feature and constraints on free-free absorption and orientation parameters

    Emission from other low-luminosity AGN

Jets and outflows (high energy and VHE observations)

    Site of HE and VHE emission in blazars

    Leptonic vs hadronic processes

    IC 310 and black hole lightning

Jets and outflows (theory and simulations)

    Production mechanism

    MHD processes & particle acceleration

    Numerical simulations of jets and outflows

Cluster core (thermal)

    Hitomi X-ray high resolution spectroscopy

    High angular resolution X-ray observations

    Cold molecular gas filaments in Perseus and other clusters

Cluster core (non thermal)

    Radio bubbles, haloes, and mini-haloes

    Polarization and rotation measure

    Low radio frequency observations

Cluster (theory and simulations)

    Role of shocks and turbulence

    Energy transport

    Mergers vs relaxed clusters

Feedback

    Jet-ISM interaction

    Black hole-galaxy-cluster co-evolution

    Heating and cooling