1. Theoretical Plasma Physics Group, Physics Department, Quaid-i-Azam University, Islamabad 45320, Pakistan
2. Theoretical Physics Division, PINSTECH, P. O. Nilore, Islamabad, Pakistan
3. Department of Computer Engineering, University of Engineering and Technology, Taxila 47050, Pakistan
4. COMSATS Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan