Mergers
The spin controversy
X-ray polarization
Jets from black-hole binaries
Extended TeV emission
Collapsars
Ultraluminous sources with black holes
University of Turku,
Turku, Finland
Nicolaus Copernicus Astronomical Center, Warsaw, Poland
University of Turku,
Turku, Finland
Institute for Astronomy and Astrophysics, University of Tübingen, Tübingen, Germany
Astronomical Observatory Warsaw University, Warsaw, Poland
Max Planck Institute for Astrophysics,
Garching, Germany
University of Colorado, Boulder, Colorado, USA
Max Planck Institute for Nuclear Physics, Heidelberg, Germany
Faculty of Exact Sciences,
Tel Aviv, Israël
INAF -- Brera Astronomical Observatory, Merate, Italy