Author affiliations
1 University of Florence, Department of Physics, I-50019 Sesto Fiorentino, Florence, Italy
2 INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence, Italy
3 University of Naples "Federico II", Department of Physics, I-80126 Naples, Italy
4 INFN, Sezione di Naples, I-80126 Naples, Italy
5 Lebedev Physical Institute, RU-119991, Moscow, Russia
6 University of Bari, Department of Physics, I-70126 Bari, Italy
7 INFN, Sezione di Bari, I-70126 Bari, Italy
8 INFN, Sezione di Trieste, I-34149 Trieste, Italy
9 Ioffe Physical Technical Institute, RU-194021 St. Petersburg, Russia
10 INFN, Sezione di Rome "Tor Vergata", I-00133 Rome, Italy
11 University of Rome "Tor Vergata", Department of Physics, I-00133 Rome, Italy
12 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute),Kashirskoe highway 31, Moscow, 115409, Russia
13 KTH, Department of Physics, and the Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Centre, SE-10691 Stockholm, Sweden
14 IFAC, I-50019 Sesto Fiorentino, Florence, Italy
15 INFN, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy
16 Universitat Siegen, Department of Physics, D-57068 Siegen, Germany
17 University of Trieste, Department of Physics, I-34147 Trieste, Italy
18 Indian Centre for Space Physics, 43 Chalantika, Garia Station Road, Kolkata 700084, West Bengal, India
19 University of Udine, Department of Mathematics and Informatics, I-33100 Udine, Italy
20 Centre for Space Research, North-West University, 2520 Potchefstroom, South Africa
21 Now at INFN, Sezione di Perugia, I-06123 Perugia, Italy
22 Previously at INFN, Sezione di Trieste, I-34149 Trieste, Italy
