1. Department of Physics, Cotton University, Panbazar, Guwahati 781001, Assam, India
2. Space and Astronomy Research Center, Cotton University, Panbazar, Guwahati 781001, Assam, India
3. Graduate Institute of Astronomy, National Central University, Jhongli 32001, Taiwan
4. Department of Physics, State University of New York at Oswego, Oswego, NY 13126, USA
5. Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India
6. Center for Computational Relativity and Gravitation, Rochester Institute of Technology, Rochester, NY 14623, USA
7. Department of Physics, Acharya Narendra Dev College, Govindpuri, Kalkaji, New Delhi 110019, India