- C. Adami – Laboratoire d’Astrophysique de Marseille, France
- B. Altieri – ESAC Madrid, Spain
- L. Baumont – University of Trieste, Italy
- M. Bolzonella – INAF-OAS, Bologna, Italy
- D. Bomans – Ruhr University, Bochum, Germany
- J. Brinchman – European Southern Observatory, Munich, Germany
- V. Carcelem Aycart – ESAC, Madrid, Spain
- L. Chiappetti – INAF IASF, Milano, Italy
- J.C. Cuillandre – CEA Saclay, France
- S. Ettori – INAF-OAS, Bologna, Italy
- S. Farrens – CEA Saclay, France
- F. Gastaldello – INAF-IASF, Milano, Italy
- P. Giles – University of Sussex, UK
- N. Hatch – University of Nottingham, UK
- C. Horellou – Chalmers University, Göteborg, Sweden
- E. Koulouridis – National Observatory of Athens, Greece
- F. La Franca – Universita Roma Tre, Rome, Italy
- A. La Marca – SRON, Groningen, NL
- E. Lau -CFA – Harvard & Smithsonian, US
- G. F. Lesci – University of Bologna, Italy
- M. Lieu – University of Nottingham, UK
- X. Lopez Lopez – INAF-OAS, Bologna, Italy
- L. Lovisari – INAF-IASF, Milano, Italy
- M. Matturi – Heildelberg Univeristy, Germany
- B. Maughan – University of Bristol, UK
- S. Maurogordato – OCA, Nice, France
- J.-B. Melin – CEA Saclay, France
- L. Moscardini – University of Bologna, Italy
- I. Muñoz – CEA Saclay, France
- C. Murray – CEA Saclay, France
- D. Nagai – Yale University, US
- F. Pacaud – Univerisyt of Bonn, Germany
- S. Paltani – Univeristy of Geneva, Switzerland
- E. Piconcelli – INAF-OAR Rome, Italy
- M. Pierre – CEA Saclay, France
- J. Pilling – University of Sussex, UK
- S. Pires – CEA Saclay, France
- D. Porquet – Laboratoire d’Astrophysique de Marseille, France
- E. Pouliasis – National Observatory of Athens, Greece
- F. Ricci – Universita Roma Tre, Italy
- M. Romanello – University of Bologna, Italy
- K. Romer – University of Sussex, UK
- M. Rossetti – INAF-IASF, Milano, Italy
- T. Sadibekova – CEA Saclay, France
- Y. Toba – Ritsumeikan University, Japan
- G. Toni – University of Bologna, Italy
- I. Valtchanov – ESAC Madrid, Spain
- C. Vignali – University of Bologna, Italy
- J. Willis – University of Victoria, Canada
- C. Wood – University of Bristol, UK