1. Department of Physics, University of Calicut, Malappuram 673635, Kerala, India
2. Department of Physics, Dayananda Sagar University, Hosur Main Road, Bangalore 560068, Karnataka, India
3. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, Maharashtra, India
4. Department of Earth and Space Sciences, Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, Kerala, India
5. Space Astronomy Group, ISITE campus, U. R. Rao Satellite Centre, Karthik Nagar, Bangalore 560037, Karnataka, India