1. Amity Institute of Applied Sciences, Amity University Uttar Pradesh, Sector-125, Noida-201303, U.P., India
2. Centre for Astrophysics Research, School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
3. School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
4. Obserwatorium Astronomiczne, Uniwersytet Jagielloński, ul. Orla 171, PL-30244 Kraków, Poland
5. #eAstroLab , UM-DAE Centre for Excellence in Basic Sciences, Vidyanagari, Mumbai 400098, India
6. Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad-211 010, India
7. Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata 700070, India