Affiliation: | Department of Astrophysics, Astronomy and Mechanics, National and Kapodistrian University of Athens, Panepistimiopolis, GR 15783 Zographos, Athens, Greece; National Institute for Space Researh (INPE) and World Institute for Space Environment Research (WISER), P.O. Box 515, São José dos Campos-SP 12227-010, Brazil; National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt |