Fabio Simona Etienne Gabriel Mariachiara Elena Loic Thomas Dominique Stefano Jeremy Steve Stefano Katharina Klaus Guillaume Holger Pascale Marceau Lorenzo Ian Lauro Naomi Daniele Bianca Kathy Philip Graham Genevieve Jochen Yu-Ying Amandine Eugene Massimo Myriam Brian Paola Joel Sabrina Silvano Matthias Scott Hiroki Gastaldello Ghizzardi Pointecouteau Pratt Rossetti Rasia Guennou Reiprich Eckert Ettori Sanders Allen Borgani Borm Dolag Hurier Israel JABLONKA Limousin Lovisari McCarthy Moscardini Ota Pierini Poggianti Romer Rooney Smith Soucail Weller Zhang Le Brun Churazov Gaspari Gitti McNamara Popesso Bregman De Grandi Molendi Ehle Randall Akamatsu INAF-IASF MILANO IASF-Milano/ INAF IRAP DSM - IRFU - Service d'Astrophysique, CEA Saclay Istituto Nazionale di Astrofisica - IASF Milano OATS-Trieste IAS, Orsay Argelander Institute for Astronomy, Bonn University Astronomy Department, University of Geneva INAF OA Bologna MPE Stanford University INAF & University of Trieste Argelander-Institute for Astronomy, University of Bonn University Observatory Munich, LMU Institut d'Astrophysique Spatiale, Orsay Institute for Computational Cosmology, Durham University EPFL Laboratoire d'Astrophysique de Marseille Argelander-Institut für Astronomie Astrophysics Research Institute, Liverpool JMU Dipartimento di Fisica e Astronomia, Universita' di Bologna Nara Woman's University IRAP INAf-Astronomical Observatory of Padova Sussex University of Sussex University of Birmingham IRAP Ludwig-Maximilians University Munich Argelander-Institute for Astronomy CEA Saclay Max Planck Institute for Astrophysics Max Planck Institute for Astrophysics, Garching Dipartimento di Fisica e Astronomia - Universita' di Bologna University of Waterloo Department of Physics & Astronomy Excellence Cluster Universe Munich Univ of Michigan INAF - Brera Astronomical Observatory INAF ESA/ESAC Smithsonian SRON Kaustuv Gianfranco Antonio francesco Megan Maxim Massimo Ikuyuki Tony Kazuhiro Evan Georgiana Helen Gerrit Robert Basu Brunetti Cava de gasperin Donahue Markevitch Meneghetti Mitsuishi Mroczkowski Nakazawa O'Sullivan Ogrean Russell Schellenberger Schmidt Volker Ming Stephen Anna Springel Sun Walker Wolter Stephan Eunhyeuk Alexander Herve Franco Carlo Mauro Alessandro Zimmer Kim Fritz Bourdin Vazza Giocoli Roncarelli Boselli University of Bonn INAF- Istituto di Radioastronomia Geneva Observatory, University of Geneva university of hamburg Michigan State University GSFC INAF - OABO Nagoya University Naval Research Lab The University of Tokyo Harvard University Harvard Institute of Astronomy, Cambridge Argelander-Institut für Astronomie, Universität Bonn University of Heidelberg Heidelberg University, and Heidelberg Institute for Theoretical Studies (HITS) University of Alabama Institute of Astronomy, University of Cambridge INAF-Osservatorio Astronomico di Brera Oskar Klein Center for Cosmoparticle Physics and Department of Physics, Stockholm University Korea Aerospace Research Institute INAF-IASF Milano Università degli studi di Roma `Tor Vergata’ Hamburg Observatory, Hamburg University University of Bologna Università di Bologna - DIFA Laboratoire d'Astrophysique de Marseille