| M.C. Begelman | JILA, University of Colorado Boulder (USA) |
| R.D. Blandford | KIPAC, Stanford University (USA) |
| A. Celotti | International School for Advanced Studies - SISSA (Italy) |
| J.G. Kirk | Max-Planck-Institut fur Kernphysik (Germany) |
| J.-P. Lasota | Institut d'Astrophysique de Paris (France) |
| G. M. Madejski | KIPAC, Stanford University (USA) - co-Chairman |
| R. Moderski | N. Copernicus Astronomical Center (Poland) |
| M. Ostrowski | Astronomical Observatory, Jagiellonian University (Poland) - co-Chairman |
| L. Stawarz | ISAS, Japan Aerospace Exploration Agency (Japan) - contact person |