1. Université Grenoble Alpes , CNRS, IPAG, 38000 Grenoble, France
2. Dipartimento di Matematica e Fisica, Università degli Studi Roma Tre , Via della Vasca Navale 84, I-00146 Roma, Italy
3. INAF Istituto di Astrofisica e Planetologia Spaziali , Via del Fosso del Cavaliere 100, I-00133 Roma, Italy
4. Dipartimento di Fisica, Università degli Studi di Roma ‘La Sapienza’ , Piazzale Aldo Moro 5, I-00185 Roma, Italy
5. Dipartimento di Fisica, Università degli Studi di Roma ‘Tor Vergata’ , Via della Ricerca Scientifica 1, I-00133 Roma, Italy
6. Instituto de Astrofísica de Andalucía, CSIC , Glorieta de la Astronomía s/n, E-18008 Granada, Spain
7. Department of Physics and Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , Stanford, CA 94305, USA
8. Université de Strasbourg , CNRS, Observatoire Astronomique de Strasbourg, UMR 7550, F-67000 Strasbourg, France
9. ASI – Agenzia Spaziale Italiana , Via del Politecnico snc, I-00133 Roma, Italy
10. Space Science Data Center, Agenzia Spaziale Italiana , Via del Politecnico snc, I-00133 Roma, Italy
11. Istituto Nazionale di Fisica Nucleare, Sezione di Roma ‘Tor Vergata’ , Via della Ricerca Scientifica 1, I-00133 Roma, Italy
12. Department of Astronomy, University of Maryland , College Park, MD 20742, USA
13. School of Mathematics, Statistics, and Physics, Newcastle University , Newcastle upon Tyne NE1 7RU, UK
14. Department of Physics and Astronomy, University of Turku , FI-20014 Turku, Finland
15. MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA
16. Astronomical Institute of the Czech Academy of Sciences , Boční II 1401/1, CZ-14100 Praha 4, Czech Republic
17. Astronomical Institute, Charles University , V Holešovičkách 2, CZ-18000 Prague, Czech Republic
18. Nordita, KTH Royal Institute of Technology and Stockholm University , Hannes Alfvéns väg 12, SE-10691 Stockholm, Sweden
19. National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Beijing 100101, China
20. INAF Osservatorio Astronomico di Roma , Via Frascati 33, I-00078 Monte Porzio Catone (RM), Italy
21. INAF Osservatorio Astronomico di Cagliari , Via della Scienza 5, I-09047 Selargius (CA), Italy
22. Istituto Nazionale di Fisica Nucleare, Sezione di Pisa , Largo B. Pontecorvo 3, I-56127 Pisa, Italy
23. Dipartimento di Fisica, Università di Pisa , Largo B. Pontecorvo 3, I-56127 Pisa, Italy
24. NASA Marshall Space Flight Center , Huntsville, AL 35812, USA
25. Istituto Nazionale di Fisica Nucleare, Sezione di Torino , Via Pietro Giuria 1, I-10125 Torino, Italy
26. Dipartimento di Fisica, Università degli Studi di Torino , Via Pietro Giuria 1, I-10125 Torino, Italy
27. INAF Osservatorio Astrofisico di Arcetri , Largo Enrico Fermi 5, I-50125 Firenze, Italy
28. Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze , Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy
29. Istituto Nazionale di Fisica Nucleare , Sezione di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy
30. Science and Technology Institute, Universities Space Research Association , Huntsville, AL 35805, USA
31. Institut für Astronomie und Astrophysik, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany
32. RIKEN Cluster for Pioneering Research , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
33. California Institute of Technology , Pasadena, CA 91125, USA
34. Yamagata University , 1-4-12 Kojirakawamachi, Yamagatashi 990-8560, Japan
35. University of British Columbia , Vancouver, BC V6T 1Z4, Canada
36. International Center for Hadron Astrophysics, Chiba University , Chiba 263-8522, Japan
37. Institute for Astrophysical Research, Boston University , 725 Commonwealth Avenue, Boston, MA 02215, USA
38. Department of Astrophysics, St Petersburg State University , Universitetsky pr. 28, Petrodvoretz, 198504 St Petersburg, Russia
39. Department of Physics and Astronomy and Space Science Center, University of New Hampshire , Durham, NH 03824, USA
40. Physics Department and McDonnell Center for the Space Sciences , Washington University in St Louis, St Louis, MO 63130, USA
41. Finnish Centre for Astronomy with ESO , University of Turku, FI-20014 Turku, Finland
42. Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University , Furocho, Chikusaku, Nagoya, Aichi 464-8602, Japan
43. Hiroshima Astrophysical Science Center, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
44. University of Maryland , Baltimore County, Baltimore, MD 21250, USA
45. NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
46. Center for Research and Exploration in Space Science and Technology, NASA/GSFC , Greenbelt, MD 20771, USA
47. Department of Physics, The University of Hong Kong , Pokfulam, Hong Kong
48. Department of Astronomy and Astrophysics, Pennsylvania State University , University Park, PA 16802, USA
49. Center for Astrophysics|Harvard & Smithsonian , 60 Garden St, Cambridge, MA 02138, USA
50. INAF Osservatorio Astronomico di Brera , Via E. Bianchi 46, I-23807 Merate (LC), Italy
51. Dipartimento di Fisica e Astronomia , Università degli Studi di Padova, Via Marzolo 8, I-35131 Padova, Italy
52. Mullard Space Science Laboratory, University College London , Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
53. Anton Pannekoek Institute for Astronomy & GRAPPA, University of Amsterdam , Science Park 904, NL-1098 XH Amsterdam, the Netherlands
54. Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, China