Affiliation: | M. I. Wanas a)c)d) , Gamal G. L. Nashed b)c)d) , and A. A. Nowaya e) a) Astronomy Department, Faculty of Science, Cairo University, Giza, Egypt b) Mathematics Department, Faculty of Science, King Faisal University, P.O. Box 380 Al-Ahsaa 31982, the Kingdom of Saudi Arabia c) Mathematics Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt d) Center for Theoretical Physics, British University of Egypt Sherouk City 11837, P.O. Box 43, Egypt e) Egyptian Relativity Group (ERG), Physics Department, Faculty of Science, Monofia University, Monofia, Egypt |