| Institution: | 1. Astronomy Dept., National Research Institute of Astronomy and Geophysics, Box: 138, 11421, Helwan, Cairo, Egypt;2. Kottamia Center of Scientific Excellence in Astronomy and Space Sciences (KCScE) STDF, ASRT, Cairo, Egypt;3. Physics Dept., College of Science, Northern Border University, 1320, Arar, Saudi Arabia;4. Astronomy Dept. and Meteorology, Faculty of Science, Al-Azhar University, Cairo, Egypt;1. Physics Department, University of Rijeka, Radmile Matej?i?, 51000 Rijeka, Croatia;2. INAF Astronomical Observatory of Padova, via dell’Osservatorio 8, Asiago (VI) 36012, Italy;1. Department of Physics and Astronomy, Shumen University, Shumen 9700, Bulgaria;2. Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Mexico |
