[1] Univ Urbino, Dipartimento Sci Pure & Applicate, Via S Chiara 27, I-61029 Urbino, Italy
[2] INAF OAS Bologna, Via P Gobetti 9313, Bologna, Italy
[3] Osserv Astron Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, Italy
[4] Ist Nazl Fis Nucl, TIFPA, Via Sommarive 14, I-38123 Trento, Italy
[5] Univ Geneva, Dept Astron, Ch Ecogia 16, CH-1290 Versoix, Switzerland
[6] INAF Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, LC, Italy
[7] Univ Birmingham, Inst Gravitat Wave Astron, Birmingham B15 2TT, W Midlands, England
[8] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
[9] Univ Ferrara, Dept Phys & Earth Sci, Via Saragat 1, I-44122 Ferrara, Italy
[10] Univ Paris Saclay, CEA, IRFU, Dept Astrophys, F-91191 Gif Sur Yvette, France
[11] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
[12] Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England
[13] Univ Leicester, Leicester Inst Space & Earth Observat, Univ Rd, Leicester LE1 7RH, Leics, England
[14] Ist Nazl Fis Nucl, Sez Firenze, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy
[15] GSSI, Viale Francesco Crispi 7, I-67100 Laquila, Italy
[16] Stanford Univ, Dept Phys & Astron, Via Pueblo Mall 382, Stanford, CA 94305 USA
[17] Istanbul Univ, Dept Astron & Space Sci, TR-34119 Istanbul, Turkey
[18] INAF Capodimonte Astron Observ Naples, Via Moiariello 16, I-80131 Naples, Italy
[19] Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching, Germany
[20] Univ Trieste, Dept Phys, Via Valerio 2, Trieste, Italy
[21] INFN Trieste, Via Valerio 2, Trieste, Italy
[22] Leibniz Inst Astrophys, Sternwarte 16, D-14482 Potsdam, Germany
[23] INAF Osservatorio Astron Trieste, Via G Tiepolo 11, I-34131 Trieste, Italy
[24] INAF Ist Astrofis Spaziale & Fis Cosm Milano, Via E Bassini 15, I-20133 Milan, Italy
[25] Univ Zielona Gora, Janusz Gil Inst Astron, Lubuska 2, PL-65265 Zielona Gora, Poland
[26] INAF Osservatorio Astron Roma, Via Frascati 33, I-00040 Monte Porzio Catone, Italy
[27] Goethe Univ Frankfurt, Inst Theoret Phys, Max von Laue Str 1, D-60438 Frankfurt, Germany
[28] Frankfurt Inst Adv Studies, Ruth Moufang Str 1, D-60438 Frankfurt, Germany
[29] Univ Cote dAzur, CNRS UMR 5270, ARTEMIS, Observ Cote dAzur, Blvd Observ,CS 34229, F-06304 Nice 04, France
[30] Univ Malta, Dept Phys, Msida Msd 2080, Malta
[31] Univ Malta, Inst Space Sci & Astron, Msida Msd 2080, Malta
[32] Univ Witwatersrand, Sch Phys, Private Bag 3, ZA-2050 Johannesburg, South Africa
[33] Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, I-20126 Milan, Italy
[34] Ist Nazl Fis Nucl, Sez Milano Bicocca, Piazza Sci 3, I-20126 Milan, Italy
[35] Agenzia Spaziale Italiana, SSDC, Via Politecn, I-100133 Rome, Italy
[36] Univ Western Australia, Sch Phys, M013, Crawley, WA 6009, Australia
[37] Univ Virgin Isl, 2 John Brewers Bay, St Thomas, VI 00802 USA
[38] Etelman Observ, Bonne Resolut, St Thomas, VI USA
[39] Czech Tech Univ, Fac Elect Engn, Prague 16627, Czech Republic
[40] Kazan Fed Univ, Kazan 420008, Russia
[41] SRON Netherlands Inst Space Res, SRON, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands
[42] Radboud Univ Nijmegen, Dept Astrophys, IMAPP, POB 9010, NL-6500 GL Nijmegen, Netherlands
[43] Univ Copenhagen, Dark Cosmol Ctr, Niels Bohr Inst, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
[44] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England
[45] Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy
[46] Slovenian Ctr Excellence Space Sci & Technol, SPACE SI, Ljubljana, Slovenia
[47] Czech Acad Sci, Astron Inst, Fricova 298, Ondrejov 25165, Czech Republic
[48] Sejong Univ, 98 Gunja Dong, Seoul 143747, South Korea
[49] CNRS, Observ Paris, PSL Res Univ, GEPI, Pl Jules Janssen, F-92190 Meudon, France
[50] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA