1. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , E-08193 Bellaterra (Barcelona), Spain
2. Institute of Space Sciences (ICE, CSIC) , Campus UAB, Carrer de Magrans, E-08193 Barcelona, Spain
3. Institut d’Estudis Espacials de Catalunya (IEEC) , Carrer Gran Capità, E-08034 Barcelona, Spain
4. Institute of Physics, Jan Kochanowski University , ul. Uniwersytecka 7, PL-25-406 Kielce, Poland