[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[2] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Wako, Saitama 3510198, Japan
[3] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan
[4] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA
[5] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France
[6] Ist Astrofis Spaziale & Fis Cosmica Palermo, I-90146 Palermo, Italy
[7] NASA, Goddard Space Flight Ctr, Ctr Res & Explorat Space Sci & Technol, Greenbelt, MD 20771 USA
[8] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy
[9] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
[10] Univ Tokyo, Dept Phys, Grad Sch Sci, Bunkyo Ku, Tokyo 1130033, Japan
[11] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA
[12] CSIC, Inst Ciencies Espai, Inst Estud Espacials Catalunya, Barcelona 08193, Spain
[13] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA
[14] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA
[15] Inst Catalana Recerca & Estud Avancats, Barcelona, Spain
[16] Consorzio Interuniv Fis Spaziale, I-10133 Turin, Italy
[17] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden
[18] Natl Acad Sci, Natl Res Council, Washington, DC 20001 USA
[19] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA
[20] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA
[21] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA
[22] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA
[23] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Astron, Santa Cruz, CA 95064 USA
[24] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy
[25] Univ Paris Diderot, Serv Astrophys, Lab Astrophys Interact Multiechelles, CEA Saclay,CNRS, F-91191 Gif Sur Yvette, France
[26] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy
[27] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy
[28] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA
[29] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[30] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy
[31] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA
[32] Ecole Polytech, CNRS, Lab Leprince Ringuet, CNRS,IN2P3, F-91128 Palaiseau, France
[33] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy
[34] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy
[35] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy
[36] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
[37] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[38] Ist Astrofis Spaziale & Fis Cosmica, Ist Nazl Astrofis, I-20133 Milan, Italy
[39] AlbaNova, Dept Phys, Royal Inst Technol Kungliga Tekn Hogskolan, SE-10691 Stockholm, Sweden
[40] George Mason Univ, Fairfax, VA 22030 USA
[41] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[42] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS IN2P3, Montpellier, France
[43] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA
[44] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden
[45] Agcy Spaziale Italiana Sci Data Ctr, I-00044 Frascati, Italy
[46] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA
[47] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy
[48] Ist Nazl Fis Nucl, Sez Trieste, Grp Coll Udine, I-33100 Udine, Italy
[49] CEN Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France
[50] Univ Bordeaux 1, CEN Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France