| Hans Böhringer | MPI für Extraterrestrische Physik, Garching, Germany | 
	  
	  | Johan Bleeker | SRON, Space Research Organization, Utrecht, The Netherlands | 
	  
	  | Laura Brenneman | Harvard-Smithsonian CfA, Cambridge, USA | 
	  
	  | Anne Decourchelle | CEA,  Service d’Astrophysique, Saclay, France | 
	  
	  | Andy Fabian | Institute of Astronomy, Cambridge, UK | 
	  | Rob Fender | University of Southampton, UK | 
	
	  | Riccardo Giacconi | Johns Hopkins University, Baltimore, USA | 
	  | Gabriele Ghisellini | INAF/Osservatorio di Brera, Italy | 
	  | Roberto Gilli | INAF/Osservatorio di Bologna, Italy | 
	  | Jeanette Gladstone | University of Alberta, Canada | 
	  | Fiona Harrison | California Institute of Technology, Pasadena, USA | 
	  | Kazuo Makishima | University of Tokyo, Japan | 
	  | Maxim Markevitch | Harvard-Smithsonian CfA, Cambridge, USA | 
	  | Steven Murray | Johns Hopkins University, Baltimore, USA | 
	  | Kirpal Nandra | MPI für Extraterrestrische Physik, Garching, Germany | 
	  | Rob Petre | NASA Goddard Space Flight Center, Greenbelt, USA | 
	 
	  | Tsvi Piran | Racah Institute of Physics - The Hebrew University, Jerusalem | 
	  | Luigi Piro | INAF/Ist. Astrofisica e Planetologia Spaziali, Roma, Italy | 
	  | Peter Predehl | MPI für Extraterrestrische Physik, Garching, Germany | 
	  | Ken Pounds | University of Leicester, UK | 
	  | Nanda Rea | CSIC-IEEC Inst. of Space Science, Barcelona, Spain | 
	 
	  | Martin Rees | Institute of Astronomy, Cambridge, UK | 
	  | James Reeves | Keele University, Staffordshire, UK | 
	  | Piero Rosati | ESO, European Southern Observatory, Garching, Germany | 
	  | Jürgen Schmitt | Hamburg University, Germany | 
	  | Luigi Stella | INAF/Osservatorio di Roma, Italy | 
	  | Rashid Sunayev | MPI für Astrophysik, Garching, Germany &
                        Moscow Space Research Institute, Russia | 
	 | Tadayuki Takahashi | JAXA Inst. of Space & Astronautical Science, Tokyo Japan | 
	 | Yasuo Tanaka | MPI für Extraterrestrische Physik, Garching, Germany | 
	 
	  | Alexander Tchekhovskoy | Princeton University, USA | 
	  | Ezequiel Treister | University of Hawaii | 
	  | Joachim Truemper | MPI für Extraterrestrische Physik, Garching, Germany | 
	  | Alexey Vikhlinin | SRI Space Research Institute, Moscow, Russia & Harvard-Smithsonian CfA, Cambridge, USA |