1. Department of Astrophysics & Cosmology, S. N. Bose National Centre for Basic Science, Salt lake, Sector III, Kolkata 700091, India
2. Department of Physics, School of Natural Sciences, UNIST, Ulsan 44919, Republic of Korea
3. Department of Astronomy and Space Science, Chungbuk National University, Cheongju 361-763, Republic of Korea
4. Indian Centre for Space Science, Garia Station Road, Kolkata 700084, India
5. Department of Physics, Rishi Bankim Chandra College, Naihati 743165, India