1. Manipal Centre for Natural Sciences, Centre of Excellence, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
2. Inter-University Center for Astronomy and Astrophysics, Pune 411007, Maharashtra, India
3. Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400085, Maharashtra, India
4. Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, Maharashtra, India