Aims of the Conference

• Is the size of the X-ray source in black hole accreting systems ~1-2 r_g or a few tens r_g?
  Is the source dissipating energy during accretion or most of the dissipation takes place in the lamppost?
  
  Subtopics:
  
  • spectral fitting;
  • time lags;
  • Fourier-resolved spectroscopy;
  • models of power spectra;
  • origin of QPOs;
  • lamppost model (is it physically self-consistent?)

• What is the dominant jet-launching mechanism in accreting sources?
  
  Subtopics:
  
  • Blandford-Znajek vs. Blandford-Payne;
  • jets insuper-Eddington sources;
  • jets and accretion in stellar tidal disruption events;
  • jets in narrow-line Seyfert 1 galaxies;
  • jet acceleration, jet precession, jet power from varius methods;
  • differences between jets in black-hole binaries and blazars;
  • differences between radio sources and blazars (when corrected for inclination);
  • particle acceleration, radiative processes and modelling of blazars and black-hole binaries;
  • the role of hadronic processes.

• multi-messenger physics, and GWs in particular. GWs will provide us with independent, and high-precision, measurements of BH masses and spins (including of jetted sources);
• galaxy evolution and central black-hole feedback;
• interaction between black-hole outflows and the ISM.

Comments and questions can be addressed to palazzi@iasfbo.inaf.it