1. Centre for Mathematical Plasma Astrophysics, Department of Mathematics, KU Leuven 1 , Celestijnenlaan 200B, 3001 Leuven, Belgium
2. Institute for Theoretical Physics IV, Faculty for Physics and Astronomy, Ruhr-University Bochum 2 , D-44780 Bochum, Germany
3. Departamento de Física, Universidad de Santiago de Chile 3 , Usach, 9170124 Santiago, Chile
4. Institute of Physics, University of Maria Curie-Skłodowska 4 , Pl. M. Curie-Skłodowska 5, 20-031 Lublin, Poland
5. Mathematics, Statistics and Physics Department, College of Arts and Sciences, Qatar University 5 , 2713 Doha, Qatar
6. Theoretical Physics Research Group, Physics Department, Faculty of Science, Mansoura University 6 , 35516 Mansoura, Egypt