| Institution: | 1. Physics Department, College of Science, Northern Border University, Arar, Saudi Arabia;2. Astronomy Department, National Research Institute of Astronomy and Geophysics, 11421, Helwan, Cairo, Egypt;1. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Department of Physics, College of Science, Northern Border University, Arar, Saudi Arabia;2. Department of Astronomy, National research Institute of Astronomy and Geophysics, Helwan 11421, Cairo, Egypt;1. Department of Mathematics, Faculty of Science, New Valley University, El-Kharja 72511, Egypt;2. Department of Astronomy, National Research Institute of Astronomy and Geophysics, Helwan, Cairo 17211, Egypt;1. INAF Astronomical Observatory of Padova, via dell’Osservatorio 8, 36012 Asiago (VI), Italy;2. ANS Collaboration, c/o Astronomical Observatory, 36012 Asiago (VI), Italy |
